Yeah, I'm with you on #3. A few random white people cementing themselves to 93N in Boston did ZERO to support BLM. Nobody was educated. People who were otherwise neutral on the topic got mad at BLM.
I think a little bit of "unnecessary" disruption is a good thing in protests so a group isn't easily ignored, but if your ONLY outcome is to make enemies and alienate allies, you did something wrong. Nobody even remembered that the 93N thing was for BLM unless they were already invested in BLM.
Malcolm X had one small thing wrong. It wasn't that "Silence is Violence" wasn't true, of course it's everyone's responsibility to fight injustice even if we're not minorities ourselves... It's that he said the quiet part loud. When you push people to take sides, often they take the *other side *because of your actions, when they wouldn't have dreamed of doing so otherwise.