If someone Ridicules, Gossips, Rallies and Shames us as a means of obscuring the

If someone Ridicules, Gossips, Rallies and Shames us as a means of obscuring their thefts and their lies, why are we not in the right to use violence against them? Isn’t truthfulness in argument required for us to eschew violence and enter into mutually productive, cooperative debate? Why can people attempt to create taboos to obscure their lies and thefts?