It's understandable when the person is standing right next to you and in a split second your hands drift before your brain could process what was happening. Will had ample time to process his actions. We walked more than 10ft to where his victim was and smacked him.
Now I'm not saying Chris is innocent here. But when an abuse like that is taken for granted or excused as a joke (like what Chris said to Jada), we do not do ourselves justice. We should stop making abuse seem okay on one hard and condemn it on another.
We all lose our temper at some point. Granted. But when that happens we should acknowledge our mistake and apologise for it, not try to justify it.