After a 40-hour filibuster in March and a four-hour public testimony April 12, the bill failed.
Missouri citizens will vote on the proposed amendment in an upcoming election if it passes through the House.
The official MU Facebook account received negative criticism for posting the photo in the comments.
About 500 people participated in the event.
When MU sophomore MJ Cihak heard about the Supreme Court’s decision, she cried.
HB 407 would revise the definition of discrimination to protect against the discrimination of various sexual orientations and gender identities.