The law around arrest anywhere on the planet only gives police officers the right to use reasonable force to subdue the suspect. It does not make allowances for excessive force that results in the death of the suspect. So please don't talk about stuff you know nothing about. I suppose you would enjoy it, if you are arrested with your windpipe forceably blocked by the knees of the arresting officer.
If the situation was reversed, say a black officer arresting a white man of Floyd exact profile, you would have a very different opinion about it. He would be instantly arrested and charged for murder.