Activists attended April 16 announcement in country's capital
Activists see results of March 4 elections as a setback
Judges said lawmakers did not follow proper procedure, protocol
Presidential election results unclear amid fraud allegations
Inter-American Commission of Human Rights held hearing last month
Gang members threatened Karla Avelar and her mother
Lesbian congresswoman among gathering's participants
Access to justice system among groupās goals
Activists painted rainbow crosswalks in countryās capital
Threats forced Karla Avelar to leave her home