Then explain why a new law needs to be passed.

Things like slander and libel require clear demonstration that you've been damaged monetarily etc.

I don't see how you can clearly show damages from a person deciding to commit suicide or feeling bad because of trolls. Prove it.

Regardless, at the end of the day I don't really care whether there's a legal framework in place. I don't agree that it's helpful to society at all and I'm going to err on the side that almost no speech harmful to anyone and should NEVER result in imprisonment. There's almost no road where criminalizing trolls on the internet leads to a better society or helps mentally ill people.