Sometimes, yes, but I haven't seen many, or any, cases of someone dying because of protest, again, I hear mostly hypotheticals, not actual things that happen. There's always a backup plan for emergencies like this, there's so many things that could go wrong on the way that it's not smart not to have one. Like I said, if it wasn't protesters, it's a car pile up or nature taking its toll. In dire cases of emergency, there's always these things that can come in handy:
Oddly enough, I have a story like this. My old landlord needed to go from New Bedford to Boston because his liver was failing, they drove an ambulance there, but traffic issues popped up half way there and they had to use one of those medical helicopters to get him to Boston. He didn't make it because of complications in the operating room later on, but he made it in time to live up to that point.