It’s from the BLM playbook mate. That’s one of their (awful) slogans“#NoPeaceWithoutJustice”
That’s a very sinister and intentional phrase/hashtag to use. It reads like a call to arms, I think these moonbats might be looking to physically resist these marches. Not necessarily with violence, but wouldn’t put it past them pulling an extinction rebellion-esque sit-in on the road. Be aware team.