Harry Hay (1912–2002) was an English born writer, cultural icon, early leader in the Sexual Revolution because of his role in the American LGBTQ rights movement by writing The Call and defining LGBTQ as a cultural identity. Founded the Mattachine Society in 1950, the first enduring LGBTQ rights organization on the United States. SF Bay Times Article
Find his plaque on Castro St between 18th and 19th Sts