The reality is that Smith should be charged with misdemeanour battery, even if Rock doesn't want to press charges.
You think that anyone other than a multi-millionaire would get away without consequence? Try slapping your boss or co-worker on camera and see what happens!
Its ridiculous. You cannot set a precedent where you can physically assault someone for a joke at your wife's expense. GTFO out of here. If Jada had slapped Chris Rock it'd be a different matter, because at least then it'd be the injured party retaliating.
The only way this works is (1) if you assume a woman needs a man to defend her honour on her behalf, and (2) black men hitting each other is "just part of the culture". So its both sexist and racist, while being slathered in a whole other layer of hypocrisy due to everyone involved being extremely rich and priveliged.