People who cheerfully exploit mob dynamics to intimidate others don't have a claim on the honesty of those they attempt to intimidate. That argument reminds me of bullies who complain when they meet an unexpected defeat that their intended victim was not 'fighting fair'. The willingness to initiate force, whether individually or in a group, does not confer any sort of moral authority whatsoever. Indeed, the physical authority garnered from the exercise of force is often sought as a substitute for the lack of moral authority.