If I'm in a car on a road being blocked by protesters and I need to pick my kindergartner up from school, I'm going to do what I can to get to my child because this is what is important to me. That doesn't mean I'm going to drive in to the crowd at 50mph, but I may try to inch up and plead my case with the protesters and have faith that they are reasonable people. Maybe that's a stupid approach on my part. All that said, if while doing so, someone comes at my car aggressively, how am I to know they aren't packing a gun, a knife, etc with the intent to harm me. My weapon is obvious, but I may not be the only one with a weapon.