Complex sentence: A spiral of oppression experienced by some groups in society has been identified where, firstly, oppressions occur on the basis of perceived or actual differences (which may be due to broad group stereotypes such as racism, sexism, classism, ageism, homophobia etc).
Split into simpler sentences: A spiral of oppression experienced by some groups in society has been identified. Firstly, oppressions occur on the basis of perceived or actual differences (which may be related to broad group stereotypes such as racism, sexism, classism, ageism, homophobia etc).