You really need fundamental change at the academic/think tank level, then. Without that, the ringleaders don't rot in jail; the become an activist cause célèbre, receiving more and more of a kid gloves treatment behind bars until the army of woke lawyers pursuing 'justice' secure their release into cushy teaching and think tank jobs. Look at what happened with the Weather Underground folks - if cop-killing, armed robbery and indiscriminate killing with IEDs isn't enough to keep these folks from teaching jobs, what is?
The academic/think tank level is where all this **** started. It's where critical theory started. It's at that level where critical theory morphed into other critical theories, like critical race theory, critical gender theory, critical feminist theory, and oh, hell, they even have a critical obesity theory. It's all under the umbrella of critical social justice. It's all contrived. It's all a ruse under-girded by Marxism at the center, but using post modern constructs as tools to achieve their goals. The answer to that isn't to limit free speech, to prohibit them from huddling in their think tanks dividing ways to deconstruct the most peaceful, prosperous, safe way of life in human history. The answer is more free speech, asserting our own rebuttal to it. The hard part is saying that not everything BLM is doing is righteous. That takes courage, because they've placed themselves as fake moral virtue at the top of the moral pedestal which self-righteous people like to worship.