Considering it's CNN, I'm betting they're less concerned about Maxine encouraging destruction of property and more concerned that her Check bounced.
Less that and more the riots will be Biden's Charlottesville/Unite the Right.
Biden's trying his damnest to walk a super tight rope but Waters fucked him over BIG TIME with her bullshit demanding blood and carnage. Especilally since Pelosi fucking sided publicly with the walking turd.
Biden in turn, is now fucked in that when hell breaks loose, he'll have to own the horror that Waters is enabling/supporting. Which means he's going to be FUBARed come 2022 and most likely, 2024.
Now, Waters is from a super blue district so she could kidnap and castrate a bunch of white boys with garden sheers on live TV and still get re-elected. Same with Nancy, especially since Nancy herself wants out so she can spend the last couple of yeas she has left gorging herself on consultant gigs and graft she's long set up to fill her bank accounts. But Biden's fucked if he loses either houses Congress. If he loses the Senate, his agenda is pretty much DOA and worse, McConnell will fuck him over on appointing judges; especially if another Supreme Court drops dead. But more severely, is the fact that if he loses the House he WILL be impeached and worse, have him and Hunters sins investigated and then some. Same with Harris too.
And that's not counting the notion that the local governors might do to Biden what they did to Trump; basically let the riots go on unopposed, fuck the victims of the rioters due to them putting their ideology and personal ambitions (which require them to eat antifas/BLM terrorist dick) above Biden and the national party.
TL;DR if hell breaks loose, Biden might have to force a Handmaiden Tale style public execution with Kamala, Nancy, the Squad being forced to hang Maxine Waters from a tree in a good old fashion lynching while the cameras livestream it nation-wide. Because you can make the case that Biden's hanging on a thread in terms of absolutely NEEDING to keep, at the bare minimum, the House under DNC thumb to save his own ass. And God help him if the riots and Maxine's bullshit cause the doomsday scenario of causing the GOP to get that supermajority needed to remove Biden and Harris from office. Maxine will have to be put to death in the most horrific manner possible for Biden to prevent a Charlottesville style death blow to his Presidency that Biden will never be able to come back from.