As others have said, both sides share the burden of douchebagery. That said, I've been on both sides of this situation in cars and on motorcycles and the best thing to do IMO is to let them go. Period. When you do that, they're gone, out of your hair and won't(and didn't) cause any harm. Call 911 if it makes you feel better.
The guys on the bikes(this happens with fast cars too) are defiantly engaging in a very high risk and illegal activity, that's on them. The people in the cars are committing assault. When driving a car or riding a motorcycle one must be aware of what's behind you as well as what's in front and to the sides. I've been in similar situations a handful of times: driving along, usually above the speed limit, and see a car(s) or moto(s) coming up fast behind me shooting the gaps in traffic. I simply hold my place, steady speed, stay in lane (unless my moving OUT of their way is safe) and somehow magically(insert sarcasm) they're gone. I'm not mad because they're not riding my ass and they're not mad because I'm holding them up. Everybody's happy. This applies to left lane bandits too, same thing only slower.
For those that don't ride motorcycles or are inexperienced; it's safer for a guy on a MC to ride a little faster than traffic as it's dangerous to be static to the flow of traffic because it's almost impossible to stay out of blind spots. That will get you injured or killed on a MC. Secondly, the guy on the motorcycle(or car for that matter) is not "cutting you off" if you didn't have to brake,slow or swerve. Notice I said HAVE to, if you're paying attention to your surroundings and weren't caught off guard you probably don't have to make any changes to your driving.
I realize I've gone past the scope of the video to some extent but I'm very passionate about riding motorcycles and after hundreds of thousands of miles commuting I've learned a few things about survival.
