Situationally, yes…they have. Usually it involves the driver either feeling threatened or having road rage caused by the protesters. This is an example of fear driving the incident, though to be honest, they weren’t protesters, they were motorcyclists. But the motorcyclists felt they were entitled to do what they wanted which sounds amazingly like many protesters these days. This wasn’t an automobile, but was a train. I was stationed around San Francisco when this happened. This guy and his buddies were sitting on the tracks in protest to stop a train coming from a naval weapons station. This article doesn’t explain the entire story. The sat on the tracks on a curve. The engineer was not in a position to even see them until he was right on top of them. There would not have been enough time to stop even if he had. It was a pretty long train. And this idiot just sat there saying they would stop. The train was barely moving when it ran him over. And the irony? It was an empty train. They thought they were stopping the transfer of missiles or bombs but it was empty. This one shows a jeep that drove through protesters blocking the roads. The protesters scattered, but at least one of the “peaceful protesters” opened fire on the jeep.