Runnin' over hippies, eh?
Blocking major intersections is not "peaceful protest".
Was the person in the Subaru on the way to the hospital? Could there have been a pregnant woman or a stroke victim in the passenger's seat?
"Political speech and writing are largely the defense of the indefensible. . . . Thus political language has to consist largely of euphemism, question-begging and sheer cloudy vagueness."
~Orwell, Politics and the English Language
And when an angry crowd is surrounding your car (a felony) and beating on it you are well within your rights to assume that the end result, if you hang around, would be no different than that truck driver.
The driver shouldn't be required to assume a peaceful outcome when the crowd was not peaceful.
Give a man a fish and he eats for a day. Teach a man to fish and he stops voting for the Free Fish party.
“Now it is not good for the Christian’s health to hustle the Aryan brown,
For the Christian riles, and the Aryan smiles and he weareth the Christian down;
And the end of the fight is a tombstone white with the name of the late deceased,
And the epitaph drear: “A Fool lies here who tried to hustle the East.”
From the helicopter view it shows that there were cars going around the rioters. This driver did indeed "plow through" the protesters because you can clearly see other cars going around the protesters.