They thought Trump would jump in with military personnel and then the Left would have their Kent State moment.
I suspect the Leftist figured the riots were a win/win in relation to Trump.
If Trump sent in the troops and a few BLM rioters died, as you say, they have a Kent State moment.
If Trump sits by and lets it happen, Trump looks weak to his base.
But as usual the Lefties underestimate Trump and his supporters. Trumps unique ability to communicate has again knocked them back on their heal.
It is the Leftist schemers that look weak and foolish. Their continuous lies about mostly peaceful protest when it is obvious to the casual observe that it doesnt matter if most of the protestors are peaceful while entire cities are burned and looted.
You get the government you deserve Democrat voters. Wake up and choose to be Americans again.