Background story: A gang of notorious and violent bikers in NYC were harassing the family in the range rover. When the driver of the range rover rear-ended one of them because the biker cut him off and hit his brakes they slashed his tires and tried to open the car door. It's why the driver sped off and ran over one of the bikers.
Fuck these guys. I've met some of them in person. All wannabe scarface types. They usually ride around in large numbers weaving in and out of traffic, cutting people off, tailgating, bullying other drivers and provoking confrontations. A majority of them don't even have insurance/registration. Every year the police department confiscates hundreds of motorcycles from them. The cops received over 200 calls about the same group on the day of that incident.
A few other drivers and I had a similar experience with them on the highway. I just slowed it down and let them pass me. One other driver continuously honked his horn until they broke off his side mirror and smashed his passenger window.
Here is a video of them to give you an idea on how dangerous and childish they are: