Hooligans riding loud motorbikes are at least riding together, too. Most problems don't come from sociopaths because individual sociopaths can only do the work of one person, and are only motivated by their own personal gain. Most problems come from groups of people working together and against an outgroup, either for their perceived collective benefit or for some ideological or religious cause.
I like the traffic lights example, because it demonstrates civil obedience; cooperation with their fellows in society, in general, regardless of their relationship, or agreement on ideology or religion.
I agree on in-group/out-group (and, eg, monomanical movie villains, abusing their blindly obedient minions, are unrealistic). I'm claiming the benefits of civil cooperation are so enormous that these in/out-group clashes will occur on an increasingly higher base of mutually beneficial cooperation. Because an in-group too separated is too weak.
