U.S. seeking former president's extradition on drug charges
Former HRC staffer worked for agency during Obama administration
LGBTQ-inclusive peace agreement took effect in 2016
Alexus D'Marco from the Bahamas took part
Xulhaz Mannan hacked to death in 2016
Roundtable with advocacy groups took place in Hanoi
Effort part of strategy to address migration 'root causes'
Andrea GonzƔlez murdered days after vice president visited country
Activists have scheduled marches, galas, forums
Former U.N. ambassador a vocal LGBTQ rights champion