Gay men killed by Muqtada al-Sadr's militia
U.S. ambassador to Japan also met with mothers
Advocates face crackdown in Muslim-majority country
Advocates say men were forced to undergo anal tests
Catholic church opposes statute that lawmakers approved in March
Measure introduced two years after propaganda law signed
Decision ‘particularly devastating to the community’
Omar Faye denies any gay person killed in country
2014 law prompted ‘witch hunt’ of gays, lesbians
Advocates skeptical after Kazakhstan, Beijing compete to host Olympics
