Yep, the chance of getting sucker punched does tend to make one lose enthusiasm for pulling those shenanigans.
He is still better than those who attack the innocent. But even thugs should not be attacked while in custody.
And any Bernie supporter brings up the sucker punch with me though, I will use it as an opportunity to ask them if they can consider him an honorary "protestor", or if he actually has ti start the violence instead of just react to provocation to be a nasty enough to be a Democrat.