It felt like Mexico’s fight for gay marriage was over, with same-sex couples winning the de facto right to marry. But as opposition mounts, some LGBT activists are stepping up the heat on their foes in the Catholic church.

A day before a large anti-gay marriage march, they released the names of four priests they claim are in gay relationships, outing them to the whole country.

“Everyone deserves the right to be in the closet,” says Cristian Galarza, an organiser for the National Pride Front, an LGBT rights group. “But when you come out and condemn homosexuality, condemn gay marriage, and try to influence a secular state, you’ve lost the right to the closet.”