Pride month is a celebration for all people of any sexuality and gender.
Pride month is celebrated in June as a result of the stonewall riots.
The Stonewall riots were a series of spontaneous, violent demonstrations by members of the gay community against a police raid that took place in the early morning hours of June 28, 1969, at the Stonewall Inn in the Greenwich Village neighborhood of Manhattan, New York City.
There is so much more detail behind this description.
If you would like to learn more about it. A good site is
https://www.history.com/topics/gay-rights/the-stonewall-riots
The riots themselves helped to start/move along the gay and human rights movements.