Can you elaborate on which of those clips you find that the police initiated or acted inappropriately?

The first one is what we should want to happen — a misplaced knee was moved by a colleague. There’s no context to decide if police inappropriately started an altercation. There’s no extended period of a knee on someone’s neck.

The second is police responding to someone on the ground fighting them and physically resisting arrest.

The third is pepper spraying a crowd that was refusing to move and let the police form a line, after someone lunged at the police.

The fourth is completely context free, and while unfortunate that a child was there, it doesn’t give us context to judge.

Your source also is using selective clips, that remove context to focus on emotionally triggering scenes.