Below is my conjecture. Bonus points (just like on Who's Line is it Anyway) if you can create a scenario where the the riots will APPEAR to get worse if Trump wins, and that act as a sort of threat to the normies who want a "return to normalcy" and can be turned off or shut down after an inauguration.

A racial incident? Nah, to obvious even to the normies at this point.

A mega-racial incident like a bunch of whites with swastikas curb stomping a cutish black woman? Maybe, but there would have to be arrests, it can't be a glowie op, so they would have to trick a bunch of MFs.

Threat of "civil war" if Trump wins? Nah, overplayed that hand or the J6 Reichstag fire event.

Russia/Chinese/Mohamaddian terrorist attack? It would have to be a big one.

Food shortages? Possibly...but there is a lot of bad junk food people will turn to in order to keep the hunger pangs at bay, even if there are shortages of bread/milk/eggs.

Power outages? Getting warmer. Hot summers and power outages did the trick in the 1970s...calls out our "aging infrastructure" and creates food shortages and stuff spoils in the local Walmart freezer. Add in that this primarily happens in black urban areas the negroes will throw the bricks, and will say they won't stop unless they get reparations, which won't happen if Trump wins.