Pride March

Pride parades (also known as pride marches, pride events, and pride festivals) for the LGBT community are events celebrating lesbian, gay, bisexual, and transgender (LGBT) culture and pride. The events also at times serve as demonstrations for legal rights such as same-sex marriage. Most pride events occur annually, and many take place around June to commemorate the Stonewall riots, a pivotal moment in modern LGBT social movements.

Early on the morning of Saturday June 28, 1969, lesbian, gay, bisexual, transgender, and questioning persons rioted following a police raid on the Stonewall Inn in the Greenwich Village neighborhood of New York City. The Stonewall Inn was a gay bar which catered to an assortment of patrons, but which was popular with the most marginalized people in the gay community: transvestites, transgender people, effeminate young men, hustlers, and homeless youth.

On Saturday, June 27, 1970, Chicago Gay Liberation organized a march from Washington Square Park ("Bughouse Square") to the Water Tower at the intersection of Michigan and Chicago avenues, which was the route originally planned, and then many of the participants extemporaneously marched on to the Civic Center (now Richard J. Daley) Plaza. The date was chosen because the Stonewall events began on the last Saturday of June and because organizers wanted to reach the maximum number of Michigan Avenue shoppers. Subsequent Chicago parades have been held on the last Sunday of June, coinciding with the date of many similar parades elsewhere.

...
Wikipedia