Whether or not people are intent on hating cops, and whether or not the more light that is "shed" from body cameras will help "vindicate" the tops to these people, has nothing to do with the statement in the post you quoted that started this line of conversation.
Whether or not people will still complain about the cops or say this cop was wrong, even if there was a body camera video, is entirely irrelevant to whether or not a body camera would shed more light on this situation.
A poster claimed a body camera would shed more light on this situation.
You claimed that it wouldn't.
You then tried to defend your ridiculous claim by talking about something that in no way, shape, or form defends it. (that people would still complain)