The lesbian, gay, bisexual and transgender community is no stranger to violence.

From the 1969 police raid at the Stonewall Inn in New York City that set off riots and helped touch off the modern gay-rights movement to the 1998 murder of Matthew Shepard to near-epidemic levels of violence against transgender women, the community has been marked by flashes of trauma.

After the massacre at a gay club in Orlando, Fla., that left 49 dead and 53 others injured, Richard Kim, the executive editor of The Nation, wrote on Sunday that gay bars and clubs have often been sanctuaries. And sometimes those sanctuaries have come under siege.