If he injects US military into this local fuster-cluck, he will have set a precedent for future skirmishes as they may develop. The media will skewer Trump, call him deranged, racist, a baby-killer... because that’s what the media does.
Besides, when this mess blows over, the devastation of this, and other cities across the nation, it will become apparent to the unwashed what the democrat party stands for: the total destruction of America.
So this is without precedent in US history, i.e. with respect to putting down such rebellion as this? I don’t think so. Although I do have to say that the media support of such evil is unprecedented, FWICS.