My greatest fear for any "good" social movement is that it's hijacked by a small minority of radical and violent people who seize control in a heated moment and

My greatest fear for any "good" social movement is that it's hijacked by a small minority of radical and violent people who seize control in a heated moment and subvert the once noble goals of the movement for their own gain. I think BLM is about ENDING violence. I worry that their is a small minority group within them that are starting to advocate for it, or at the very least not speak out against it (violence and harassment of police).