Question: Kolkata Rainbow Pride Festival (KRPF), formed on which date, is a Kolkata based open collective of individuals, networks and organizations that support LGBT rights?

Context paragraphs:
Circle City IN Pride: Circle City IN Pride is the annual week of LGBT pride events in Indianapolis.  The week is organized by LGBT organization Indy Pride, Inc., and has been held under this name and organization for over a decade.  In recent years, more than 95,000 gay, lesbian, bisexual, transgender and heterosexual people have attended Circle City IN Pride Festival.  Indy Pride's Parade and Festival is held the 2nd Saturday in June, with a week of events leading up to it, in honor of the Stonewall Riots and in accordance with other United States pride festivals.  Circle City IN Pride Festival is Indiana's largest Pride festival.

Chennai Rainbow Pride: Chennai Rainbow Pride march has been held by members of Tamil Nadu LGBTIQA+ communities every June since 2009.  The pride march is organised under the banner Tamil Nadu Rainbow Coalition (earlier under the banner Chennai Rainbow Coalition until 2013), which is a collective of LGBT individuals, supporters, and organizations working on human rights and healthcare for the LGBTQIA community.  The Pride March occurs on the final Sunday of June every year.  The Pride March is usually preceded by a month-long series of events organized by NGOs and organizations to inculcate awareness and support for the LGBTQ community, such as panel discussions, film screenings, and cultural performances.

LGBT social movements: Lesbian, gay, bisexual, and transgender (LGBT) social movements are social movements that advocate for the equalized acceptance of LGBT+ people in society.  In these movements, LGBT people and their allies have a long history of campaigning for what is now generally called "LGBT rights", sometimes also called "gay rights" or "gay and lesbian rights".  Although there is not a primary or an overarching central organization that represents all LGBT+ people and their interests, numerous LGBT rights organizations are active worldwide.  The earliest organizations to support LGBT+ rights were formed in the 19th century.

LGBT rights in communism: LGBT rights in communism has evolved radically throughout history.  In the 20th century, Marxist states and parties varied on LGBT rights, with some being among the first political parties to support LGBT rights, while others maintained anti-LGBT views.  In the 21st century, communist parties in the West are generally pro-LGBT rights.

Kolkata Rainbow Pride Festival: Kolkata Rainbow Pride Festival (KRPF) is a Kolkata based open collective of individuals, networks and organizations that support LGBT rights.  It was formed on 1 May 2011 to take the initiative of organising Kolkata Rainbow Pride Walk and runs a number of events such as art exhibits, film screenings, panel discussions, cultural events, community hang outs etc.

Tucson Pride: Tucson Lesbian and Gay Alliance (dba: Tucson Pride) is Arizona's first and oldest LGBT pride organization and one of the oldest LGBT pride organizations in the nation.  Tucson Pride organizes and promotes the greater Tucson metropolitan areas LGBT pride parade ("Pride on Parade") and pride festival ("Pride in the Desert") which are currently held at the start of October each year in Tucson, Arizona, to celebrate the lesbian, gay, bisexual, and transgender (LGBT) community and their allies.

Kolkata Rainbow Pride Walk: Kolkata Rainbow Pride Walk (KRPW) is the oldest in South Asia.  The first march in Kolkata was organised on 2 July 1999.  The walk was called The Friendship Walk.  Kolkata was chosen as the first city to host the march owing to Kolkata's history of movements for human and Political Rights.  Currently, Kolkata Rainbow Pride Walk is organised by the Kolkata Rainbow Pride Festival (KRPF).

LGBT rights in the Maldives: LGBT rights in the Maldives are still in development as the country continues to strongly oppose law reform and LGBT rights developments through the Universal Periodic Review and other recommendations.  The Maldives was one of the initial 57 (now 54) members to sign a document opposing LGBT rights in the UN declaration on sexual orientation and gender identity in 2008.  In 2011, the Maldives further rejected a landmark proposal for an LGBT rights resolution in the United Nations Human Rights Council put forth by the Republic of South Africa.  Since then, many other attempts to develop LGBT Rights in the country have been rejected by the Government.  Homosexuality was originally criminalised in the Maldives in the 1880s.  The Maldives law criminalises homosexuality and prescribes criminal penalties for same-sex sexual conduct and relationships.  The Penal Code of the Maldives works with Islamic Shariah Law to punish any acts relating to homosexuality through prison sentences, death penalties, and lashings.  Despite this, homosexuality is rarely prosecuted but remains a social taboo where sexual orientation discrimination occurs frequently and those in the LGBT community are subject to hate crimes and other human rights violations.

LGBT rights by country or territory: Laws affecting lesbian, gay, bisexual, and transgender (LGBT) people vary greatly by country or territory—everything from legal recognition of same-sex marriage or other types of partnerships, to the death penalty as punishment for same-sex romantic/sexual activity or identity.

Millennium March on Washington: The Millennium March on Washington was an event to raise awareness and visibility of lesbian, gay, bisexual and transgender (LGBT) people and issues of LGBT rights in the US, it was held April 28 through April 30, 2000 in Washington, DC.  The Millennium Pride Festival was held prior to the March, it was a huge event that saw thousands flock to the US capital.  A march from the Washington Monument to the front lawn of the Capitol took place on April 30, where the crowd was addressed by several members of Congress and, via video, by President Bill Clinton.  Estimates of attendance ranged from 200,000 to 1 million people.  One of the weekend's more successful events was the sellout Equality Rocks concert produced by LGBT rights organization Human Rights Campaign.  The concert was held in Washington's RFK Stadium and included stars such as Melissa Etheridge, George Michael, Pet Shop Boys, Garth Brooks, and k.d. lang.

Supporting paragraphs: Kolkata Rainbow Pride Festival LGBT rights by country or territory
Answer: 1 May 2011