Missouri has some of the strictest and most actively debated abortion laws in the country, said NARAL Pro-Choice Missouri director Alison Dreith.
Event organizers estimated that there were at least 800 demonstrators.
Mizzou Students for Life helped bring the Genocide Awareness Project to campus in 2012 but do not support them being here this year.
The bill goes into effect Aug. 28.
The display elicited a variety of reactions from different students.