Gathering began a month after Pulse nightclub massacre
Activist took part in peace talks in Cuba
U.S. official notes progress on LGBT issues in former Soviet republic
René MartÃnez disappeared in city of San Pedro Sula on June 1
Randy Berry to attend events in D.C., New York
Vatican strongly opposed measure backed by prime minister
More than two dozen taken into custody in Moscow, St. Petersburg
Institution criticized for response to human rights abuses
Career diplomat discusses anti-trans violence, U.S. election
Anti-LGBT violence, discrimination persistent last year
