I agree violence should not be tolerated but we are not yet I believe in that Eutopian society, yet.
Until there are the same protections for slander and malicious words for being as bad as violent acts then there will remain conflict.
Chris Rock made a joke about a very sensitive subject for Jada, highly personal and witnessed by millions, whoever thinks alopcia does not affect women greatly is an idiot.
Her alopecia I presume is some auto imune condition, in other words an illness, would he have mocked someone who had been diagnosed with HIV or cancer or parkinsons, I think not and there would be have been such an outcry, the man is an idiot.
Back to the consequenses, Chris was slapped, very wrong but if Will had not reacted, what would have been Chris's consequenses, I should imagine not many.
The consequenses would have been Jada's to bare, for all we know she may be suffering terrible body dysmorpia from it, this episode will affect her mental health, I'm sure of it and therefor her families.
The law states we must not hit or use violence, that there will be consequenses but from what I see there are many that use words to bully, crush, overpower and intimidate with the use of words. You may wish to quantify those hurtful words just as you quantify the slap, it's very difficult to measure an injustice if you lack understanding.
From what I saw, Will should not have touched Chris, but yes I think he should have called him out on the horrible joke, Chris needed to understand at that moment.
After the fact it wouldn't have worked, the swearing was nothing compared to what Chris did.