UPDATED at 5:15 p.m. with statement from journalism dean.
Melissa Click shut herself in her university office on Tuesday afternoon and could be heard sobbing through the door.
A day earlier, the communications professor at the University of Missouri had helped lead a multitude of activists form a circle hundreds of yards long to block reporters from a tent encampment on Mizzou's Carnahan Quadrangle, following the resignation of University of Missouri President Timothy M. Wolfe.
A video that went viral Monday evening showed Click calling out for "muscle" to help remove a student journalist from the area.