The first Parades happened in 1970 to celebrate the first anniversary of Stonewall.
The Stonewall riots happened in 1969 in New York City. They were a series of spontaneous demonstrations by members of the gay (LGBT) community in response to a police raid that began in the early morning hours of June 28, 1969, at the Stonewall Inn in the Greenwich Village neighborhood of Manhatten, New York City. Patrons of the Stonewall, other Village lesbian and gay bars, and neighborhood street people fought back when the police became violent.
This was a pivotal moment in modern LGBTQ social movements.