What is interesting is all of the outrage and the walkout over a message left on a computer screen. Few years back on of the leaders of the Berkeley High Black Student Union was gunned down by a street thug and no protest resulted.
Promising life ends in blaze of gunfire / Ivy League student, 19, slain in Berkeley
http://www.sfgate.com/bayarea/article/Promising-life-ends-in-blaze-of-gunfire-Ivy-2654708.php
Think of it as a social phenomenon. The seed was someone, or some group, noticing something on a computer screen. How does it “catch fire” and get the whole student body going?
I submit it works about the same as when someone yells “fight” and the crowd comes running.