The left has done this. THey allowed this to fester in academia for so long becuase they thought they were democrap party allies. Now they have legitimized it.
Its pure woke, Neo-marxist agitation. "They system is inherently oppressive, We are aggrieved, therefore our outrage and violence is justified."
Indeed it was once academic theory, but has spilled into society in all areas now. Furthermore, Democrats must protect and cultivate this outrage, especially racial, because it is now the only organizational impetus and energy they have remaining.