That's why we need the brain scanner so we can detect homicidal thoughts... We might have FALSE TRUCK events to try to blame it on Muslims or Trump... so with a detector perhaps we can catch these Death Racers before they get into the truck.
Perhaps we should watch ports too... they might get a big cargo ship and ram it into a nice port full of people, or do a boat power slide and send the cargo canisters smashing into people and buildings...
If we don't have the brain scanner we better ban trucks, big ships, airplanes, etc.
and anything sharp or that can hold stuff like a pressure cooker, hell lets ban anything that is not imaginary. xD
Shit when I think about it we gona have to ban rocks and tall buildings too.