Sounds like maybe you should take the hint. It's not "taking sides" to point out that you're glorifying violence if you as the president are threatening to deploy military force against protestors.
You're right, I mixed the two. In any case I think my point still stands; in most European countries both would be addressed with police batons and in case of violence rubber bullets and tear gas. From his tweet I don't think he was thinking about rubber bullets.
No it wouldn't. Most cases of looting in Europe are just forgotten about because it's done by minorities in countries like France or UK and it's a controversial topic to talk about so police and governments would rather just pretend it doesn't happen.