Earlier quoted context omitted.
Eating their own is an intrinsic behavior. It's more like "What made them target CNN?" It looks like assigning responsibility for Trump and the fact that some women were victimized.
Maybe progressives aren’t willing to support their “own” unconditionally? These aren’t sports teams. Bad behavior hurts us all and should be called out regardless of it’s on your side or not
Sure, but "eating your own" is a reference to both the coordination and the viciousness of the attack. That and the need to do so for sustenance.
That's a problem with any causehead. Even where you're winning, you have to be fighting something to stay relevant.