U.N. official addresses Front Line Defenders gathering
U.S. ambassador to U.N. wrote 2011 LGBT rights memorandum
Gay men from Syria, Iraq spoke alongside advocates
International body raising awareness of rights violations
Crackdown brings prison sentences for gay act
Pop star headlined U.N. LBGT event earlier this month
In his speech to the U.N., the president defends the rights of gays and lesbians; calls for human rights
