I stated this on a previous thread that I saw this happen on a Greyhound bus back in 1979 in New Mexico.
My daughter experienced this in Lithuania or Latvia about ten years ago when she was 20. Armed police entered the bus she was on with mean drug sniffing dogs. The dogs fingered the guy in the seat right behind her and they hauled him off. Scared her to death (and she hasn’t even watched “Midnight Express”).