I think the objective was to arrest the dude, look what happened instead. If Wilson had called for backup first, Mikey would have known he was outnumbered.
I think the conclusion I would go with is that the police seem to be acting with deference if anything. Giuliani might have made people mad, but that is because sometimes the truth itself is unpleasant.
Should haves can be argued until the second coming but the facts and the law prevail here. Wilson had no obligation to dilute the effectiveness of limited resources in order to apprehend a petty criminal w/o bringing harm to him. What should have happened is citizen Mike ought to have complied with the officer’s lawful orders. If someone wants to defy the law and even physically attack its enforcement officers then the law supports death as one of the possible outcomes. The objective is to uphold the law, not figure out how to safeguard an aggressive perp against potential harm. Officer Wilson’s choices were well within protocols, something we can’t say for the citizenship of big dead mike.