Free speech, but with caveats…
Via TheFire.org:
The University of Denver (DU) maintains a “free speech wall” for students to use to express themselves in paint—a common feature on college campuses, often taken the form of a wall or a rock. But now, after someone used the wall to paint lyrics from a punk rock song (Minor Threat’s “Guilty of Being White”) and altered a “Black Lives Matter” message, DU has placed restrictions on what the wall may be used for.