If someone says something racist or sexist enough to get thrown out a bar, then I absolutely don't want to employ this person.
In the olden days there would be rumors and people would skate by. Hell, even the folks in first group of cancellation that you deem acceptable - the Weinsteins, Spaceys and Cosbys: everyone around them knew. FOR DECADES.
And nothing happened. It took until the same technological leaps that we are talking about for their victims to find each other, gather safety in numbers, and facilitate punishment.
This is of course going to be very unpopular with the "we are not racist/sexist - we are just asking questions" crowd.