If everybody in China jumped up at the same time would it affect the path of the Earth and cause it to collide with an astroid in 1500 years? Hey, it could happen!
Look, no law or BI or poly or psyche eval will prevent someone from doing something they intend or have a compulsion to do whatever it is. It will give non-thinking people a warm, fuzzy feeling, and occasionally will come across someone not smart enough to avoid detection, but will not prevent most of the trouble our "society" encounters.