You think BLM and Antifa help the oppressed when they riot, destroy property, assault people and loot?
You think the PLO, Hamas, Al Quaeda and ISIS help the oppressed?
I know of nobody who defends Fields, Roof or McVeigh. I've seen plenty of conservatives condemn those "lone wolves" whose crimes were "isolated instances".
I see plenty of leftists refusing to condemn the Islamists who do frequently do things like this:
Just because the domestic terror arm of the DEMOCRAT left hasn't killed anyone yet, that does not relieve their cheerleaders of complicity in their crimes.