Activists from Colombia, Afghanistan expected to speak at March 20 gathering
Pedro Santos was a teenager when he came out to his parents
Caribe Afirmativo launched initiative to support peace agreement
Country beginning to implement LGBT-inclusive peace agreement
Angélica Lozano to run for country's Senate in 2018
Obama visits Cuba; Trudeau marches for LGBT rights
: Juan Carlos Pinzón spoke in D.C. on Friday
LGBT groups endorsed historic agreement
