Here’s an excellent talk by Jon Haidt that nicely, and fairly, explains the problem with the social justice movement and how it has infiltrated academia. Haidt notes there are basically two types of approaches that now exist within academia. There is the traditional approach that seeks and values truth. For this approach to work best, we need intellectual diversity within the university given the human tendency to rely on motivated reasoning. The social justice approach seeks and values change. For this approach to work best, intellectual diversity becomes an obstacle and everyone must be on the same page in order to more effectively implement change.
The talk is a little over an hour long, but well worth watching. HT to TFBW for bringing this to my attention.