I watched it. From what I can see, the police are detaining a man. Nothing else. The woman who is recording is stopped in the middle of the street (she is creating traffic, not stopped "in traffic") and when the officer initially tells her to move, she doesn't. Then, when she realizes that maybe what she is doing is a bad idea and she should leave, it's too late as the cops are swarming her car by the time she tries to pull forward. Now she has potentially assaulted an officer with her vehicle (can't tell from the video), which is a felony. This is why the one cop says "Your a dumb bitch."
I'm not saying the cops didn't do anything wrong (clearly he should not have called her that), but all the accusation about deleting the video are not supported by anyhting other than her lawyer saying she alledges that is what happened. The only hard evidence we have is the video, and all it shows is her breaking traffic laws and an officer calling her a "dumb bitch."
Before we all get our panties in a bunch, why don't we just let the lawyers and the court figure this out. All we have heard so far are statements from her lawyer and I suspect that he is overstating her case because that is his job.