Mariela Castro accused of manipulating advocates
Dennis and Judy Shepard spoke at LGBT conference in Mexico
Country seen as ‘a bridge’ to the U.S.
Nearly 500 advocates attending biennial ILGA gathering
Judy Shepard among those slated to speak
Gay couple in Baja California brought case
Last year brought advances, setbacks across the world
Complaint filed with the Inter-American Commission on Human Rights
6 political parties call for change
Many D.C. restaurants offering Cinco de Mayo specials in coming days
