Rockwell would understand

In 1984, a musician (term used generously here) named Rockwell released the song entitled "Somebody's Watching Me." Rockwell may have fizzled into Motown oblivion, but the song remains lyrically true. The sense of being watched can produce paralyzing feelings of paranoia.
Especially when you are being watched by people in a vehicle.
In fact, it would appear that the number of people watching you is inversely proportionate to the amount of agility one can exhibit.
For your consideration, the following scenario: Man in car stopped along side a full school bus.

One or two children look at driver of car = Man forgets how to naturally use hands. Actions become stilted. Cell phone flies on to the floor

This attracts attention of more children = Man now unsure how to hold mouth, where to look, or how to retrieve cell phone. In an attempt to look casual he sweeps his hair back. Sadly he misses and pokes his own eye.

Now the majority of the school children are watching the man. Gestures, rude faces and hooting at peak = Man rapidly loosing control of motor functions and other bodily abilities. Breathing is labored, bladder control fails.

Light turns green and the school bus departs. Man in automobile is reduced to a gibbering mass flailing in his own filth. Outraged drivers behind him begin honking. Man looses consciousness and later awakens in Trauma Center at St. Mary's Hospital.

I guess that this is why many school buses now have darkened windows.