It was a blatant lie by CNN to fit their narrative.
She DID NOT call for calm and peace. She called for blacks to burn down the suburbs.
CNN knew this because they later posted their own "full" copy of the event.
You assign a motive to the mistake because it fits your narrative. It may have been maliciously edited, or it may have been carelessly edited for time.
My point is if a YouTube user "BlacksforPeace" posted the edited video, how would know it had been edited? The media brings such things to light. I don't use YouTube much, but are confident that a deceptively edited video will be exposed by another YouTube user and posted in the comments so you can easily find it?
Do you seriously believe that CNN edited out "take that shit to the suburbs and burn their shit down" by accident? Or do you think they edited it out so they could claim she was calling for peace?
YouTube is extremely good at self cleaning/correcting.
To be fair, it's probably easy to thoroughly invert the facts and accept the New Truth when you are a Cultist and a True Believer.