Simple, the big bad trucker got cold feet at the prospects of killing another human. Pathetic really.
That's an issue for decent Americans. The World War Z mob couldn't give a fuck about his life, our lives, or the lives of the cops that arrested the truck driver.
Another issue is that it's much easier for the cops to go after the truck driver than it is the unruly mob. All of this is making self defense impossible.
Everywhere around me I see weakness and capitulation, mostly by whites people. It's fucking sickening. The rule of law must be upheld and it must apply to everyone.