I don't know if I'm watching the correct video, but from what I'm seeing I have ZERO problem with what Barnes did. Ibaka began it with pushing Griffin on the back, Barnes hit back to protect him.
We used to be prideful of having players like that around here, doing this exact sort of thing.
Not that I don't think Barnes is a punk, but in this case, I don't get the whole hoopla going after Barnes' head.