Crack does not make you act that way, I've lived with many crackheads in a tent village not too long ago. If a crackhead saw that laser dot, he would hightail it the other way so damn fast you wouldn't even know he was there.
Besides your only "high" on crack for like 10 seconds. After that you are just all shaky paranoid. The only way this would even be feesable is if the guy went retarded from crack.
Also, you would never be walking, or running, while on crack. Crackheads like to just lay there right after they smoke.
The public image of crack is incredibly wrong, it is a lot worse than TV and videos like this make it out to be.