Marquette University, a Catholic university located in Milwaukee, WI, has stirred up controversy for offering its campus up for an LGBT-themed prom next semester. The “Pride Prom,” which is set to happen next April, has already accumulated nearly 20,000 signatures on a petition against it.

The building where the event will be held has a chapel inside, which has drawn significant controversy. The “Pride Prom” is sponsored by the school’s LGBT+ Resource Center that refers to it as “an all-ages, family-friendly event and open to the public.”

The organization TFP Student Action is responsible for circulating the petition against the LGBT prom. TFP Student Action is an activist group that “defends traditional moral values on college campuses.” TFP stands for “tradition, family, and property.