Alternately, people who care about empathy, particularly for marginalized groups. Nobody is perfect, of course, but kneejerk lumping people who care about social justice this way is unhelpful.

If a person distills his philosophy on social justice into one trendy word I think "kneejerk lumping" is appropriate.

Versus explicitly and verbosely enumerating every stance?

Given that it appears you personally don't know the people op is talking about, what reasonable evidence are you basing this conclusion on? And given that it's generally an insulting thing to say about the op's workplace, what was your intention in saying it? How did you want the op to feel about your thoughts?

What? How does "a group concerned with social issues" translate to "unruly, malleable, intolerable, unprofessional mob" ?