Where does it come from?
You know where.
Control. So they can run you into a bridge if you misbehave. So they can shut down all cars in a ‘wildfire area’ so you can’t flee. So they can shut down your car as you bug out, so they can shut down all cars in an area because ‘oh no they’re going to do another J6 and we must stop them!)
so they can create stress. Traffic tie up’s, rout traffic certain ways so you don’t see some of their activities like that bus load of illegals you woukd have passed if you drive yourself. To drive you into floodwaters. To ram you into another car if their real target.
A million reasons. They never have just one reason, but the fundamental reason is control. It all goes back to control , all their million reasons. You know them all though- because you’ve seen them all already.