Students at the University of Minnesota Duluth staged a protest and counter-concert when rapper Soulja Boy performed on campus on Friday night. UMD student Arielle Schnur said Soulja Boy’s songs “degrade half the student body as sex objects and the other half as sexual assault perpetrators.”

Protest organizers sat down with the director of the UMD student center to plot strategy for a protest that would raise awareness without disrupting the event. In an effort to ensure an orderly demonstration, organizers required participants to attend an informational session on protest rules before the gig.

The demonstrators’ counter-concert, held at the same time as the Soulja Boy show, was free and featured a lineup of local bands.

The protest was given a boost on Friday afternoon when Soulja Boy mentioned it on his Twitter feed.