People are saying that because she is black. It is that simple. It is that heart breaking. It is ingrained in the British mind that the black woman is the aggressor, that she can't be a victim.
Only racists would look at that video and somehow find fault with the victim. No one person can compress the neck of another human being. That is attempted murder. It killed George Floyd.
If this woman had been called, let's say Karen. Or Sharon. Or Lauren. And had walked in with her Laura Ashley dress and pearl earrings, with her sustainable tote bag and beetroot juice SHE would not have had that mans hands around her neck. And if she did, be damn sure the met police would most certainly not arrest HER.