Regardless if there was an "incident" prior to the white bike stopping the SUV, he had the right to protect his family. I think the SUV driver really showed restraint not taking out a whole lot more when things were getting scary. As I stated before, I was in a bike swarm in Dallas/Ft. Worth, the bikes are loud, they are riding crazy and coming from all directions. They pass on the right shoulder, left shoulder, they split lanes and it is hairy. Guess if yo haven't "been there" you may not understand the reality of the situation.
I just 1200 miles with my daughter, son-in-law, son and 2 year old grand Princess. ANYBODY who would have threatened their safety would have payed a very dear price. You smash a window next to my Grand Princess, and it really would be the last thing you do. Not bravado, just fact.