There had already been one standoff between local residents and truckers, I remember there being chatter that the next weekend groups were going to coordinate in their neighborhoods and drive out the convoy on their own (using baseball bats, cast iron skillets, or golf clubs if need be). The situation had the potential to turn into an absolute blood bath.
In the US some psychopath straight up shot and killed a climate activist who was in the way of his car. It’s a miracle something similar didn’t happen there.
OP is probably conflating the environmentalist protestor shot in the US by cops and the numerous racial justice protestors killed by motorists, along with the incident you mentioned. Easy mistake to make.