That makes a lot of assumptions. For example, if one’s employer is a risk-averse conservative then wearing a mask at a demonstration (if it’s legal) and “doing a Batman” in the name of righteousness is a reasonable precaution. That’s not to say that lots of protesters wear masks for the wrong reasons, but it’s not a black-and-white situation.
So far I haven’t seen any instances of antifa initiating violence where they’re counter-demonstrating (the MSM would be all over covering that if it was happening). As I noted above, the antifa organisers seem to have learned from the missteps of the anti-globalisation protests and are either keeping their anarkiddie members in check or telling them that they’re not welcome.