Protesters sat in intersection near White House
World Bank, other international groups reluctant to back LGBT efforts
Former president signed draconian statute last year
Ambassadors celebrated marriage ruling amid pockets of criticism
Police used tear gas, water cannons against participants
Navid Fernández Cabrera organized Havana event
Tear gas, water cannons used against marchers
Hook-up apps, condomless sex likely factors
Anti-LGBT persecution persists throughout the world
Final vote expected before October elections
