That's because it takes more effort and time than you're willing to engage with in good faith. Maybe I should bill you the $100-200/hr HN recommends. Anyway here is just the tip of the iceberg.

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Let's start with the one mentioned by OP that targets teachers across multiple states (California, Oregon, )
https://equitablemath.org/

"In an email sent out by the Oregon Department of Education, teachers were encouraged to enroll in a course called 'A Pathway to Equitable Math Instruction.' The course came with an 82-page instructional guide that lists the ways in which white supremacy is perpetuated in math class.
'White supremacy culture infiltrates math classrooms in everyday teacher actions,' the guide reads. 'Coupled with the beliefs that underlie these actions, they perpetuate educational harm on Black, Latinx, and multilingual students, denying them full access to the world of mathematics.'
The guide offers a year-long framework for 'deconstructing racism in mathematics.' It calls for 'visibilizing [sic] the toxic characteristics of white supremacy culture with respect to math.'
Examples of classroom actions that allegedly perpetuate white supremacy include asking students to show their work, focusing on getting the right answer, tracking student success, and grading students. "

https://www.washingtontimes.com/news/2021/jun/6/is-mathemati...
"California’s Instructional Quality Commission is considering introducing into classrooms across the state a modified version of “A Pathway to Equitable Math Instruction,”

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‘Decolonise’ maths by subtracting white male viewpoint, urges Durham University
A new guide says professors must question themselves if they are citing work from ‘mostly white or male’ mathematicians
https://archive.ph/O0Itb

“decolonising the mathematical curriculum means considering the cultural origins of the mathematical concepts, focusses, and notation we most commonly use.”
“[T]he question of whether we have allowed Western mathematicians to dominate in our discipline is no less relevant than whether we have allowed western authors to dominate the field of literature. It may even be more important, if only because mathematics is rather more central to the advancement of science than is literature.”

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Ontario Dept of Education Grade 9 Mathematics Curriculum: Math has Euro-centric, colonial, and racist (of course) roots and we have to teach students the history of that. And that Math can be subjective

https://legalinsurrection.com/2021/07/ontario-math-is-subjec...
"Changes to Ontario’s math curriculum announced last year by Education Minister Stephen Lecce will include a ‘subjective’ and ‘decolonial’ approach to mathematics, according to documents posted on the ministry’s website.
'Mathematics is often positioned as an objective and pure discipline,' reads a section of an online brief highlighting the ‘vision and goals’ of the updated curriculum.
'However, the content and the context in which it is taught, the mathematicians who are celebrated, and the importance that is placed upon mathematics by society are subjective.'
Math, it continues, has been 'used to normalize racism and marginalization of non-Eurocentric mathematical knowledges,' and explains that taking a 'decolonial' and 'anti-racist approach' to teaching math will outline its 'historical roots and social constructions' to students."

They removed some of that after people noticed and complained in large enough numbers. https://www.thestar.com/news/gta/2021/07/14/ontario-removes-...

It still says that as a math teacher it's your job to remove the thing stopping minorites from succeeding which obviously must be inequity, racism, and discrimation.
"Research indicates that there are groups of students (for example, Indigenous students, Black students, students experiencing homelessness, students living in poverty, students with LGBTQ+ identities, and students with special education needs and disabilities) who continue to experience systemic barriers to accessing high-level instruction in and support with learning mathematics. Systemic barriers, such as racism, implicit bias, and other forms of discrimination, can result in inequitable academic and life outcomes, such as low confidence in one’s ability to learn mathematics, reduced rates of credit completion, and leaving the secondary school system prior to earning a diploma. Achieving equitable outcomes in mathematics for all students requires educators to be aware of and identify these barriers, as well as the ways in which they can overlap and intersect, which can compound their effect on student well-being, student success, and students’ experiences in the classroom and in the school. Educators must not only know about these barriers, they must work actively and with urgency to address and remove them."
https://www.dcp.edu.gov.on.ca/en/curriculum/secondary-mathem...

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Seattle Public Schools: Math is manipulated to allow inequality and oppress

https://www.chicagotribune.com/lifestyles/sns-tns-bc-edu-mat...

"Is Seattle really teaching that "math is racist"? Why did parents start to see ideas for math lessons that go far beyond numbers and into questions of identity?
These and other questions erupted on Twitter, shortly after Seattle Public Schools released a draft of new learning objectives that integrate ethnic studies into math"

"In math, lessons are more theoretical. Seattle's recently released proposal includes questions like, "Where does Power and Oppression show up in our math experiences?" and "How is math manipulated to allow inequality and oppression to persist?""

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Chicago; Rise of "Teacher-Activists"

https://www.chicagotribune.com/lifestyles/ct-life-teacher-ac...

"“My form of teaching is grounded in social justice and critical thinking,” says Jessica Suarez Nieto, who teaches middle school math and social studies at a Southwest Side CPS school."
"For Suarez Nieto, the act of becoming a teacher was a sort of social awakening. While still an undergrad, she became a part of the teacher activist group Teachers 4 Social Justice, which is part of a national group of similar teacher organizations around the country. Teacher activist groups, or TAGs, “create a space where teachers become more politicized than they maybe had been before,” says Maton, “where teachers are engaged in this political education that is happening behind the scenes.”"
"Teachers, with their direct link to children and education, have often chosen to extend their reach to draw attention to social issues. "

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Seattle; NAACP: Gifted programs are racist

https://apnews.com/article/new-york-education-new-york-city-...
"The changes don’t go far enough for critics like Rita Green, the education chair of the Seattle Chapter of the NAACP. She has called for more work to build environments that nurture the intellectual development of all the district’s 50,000 schoolchildren.
“We want the program just abolished. Period. The Highly Capable Cohort program is fundamentally flawed, and it’s inherently racist,” Green said."

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NYC; Mayor: Gifted programs are racist

https://nypost.com/2021/10/28/schools-debate-gifted-and-tale...
https://www.nytimes.com/2021/10/13/us/the-end-of-gifted-prog...

"A plan announced by New York City’s mayor to phase out elementary school gifted and talented programs in the country’s largest school district — if it proceeds — would be among the most significant developments yet in a push that extends from Boston to Seattle and that has stoked passions and pain over race, inequality and access to a decent education."

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California; Dept. of Education: Gifted programs are racist

https://www.msn.com/en-us/money/careers/california-seeks-end...

"The California Department of Education’s 2021 mathematics framework seeks to end accelerated math opportunities for gifted students due to racial disparities in 'gifted' math programs.
'In California in 2004-2014, 32% of Asian American students were in gifted programs, compared with 8% of White students, 4% of Black students, and 3% of Latinx students,' reads the text of the new framework."

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(Smithsonian): National Museum of African American History and Culture: Scientific Method, objective and rational thinking are forms of Whiteness thrust upon minorities
https://www.thesun.co.uk/news/12142926/african-american-muse...