People need to lighten the **** up. And I mean that in terms of attitude - not skin colour. Just in case I get accused of being racist.
Everythin you wrote is right. Adamek clearly won the close fight. But Arreola hurt his hand, because he couldnt catched Adamek. He threw not proper punches, badly wanted to hurt Adamek. This is why he injured hand. Hit and not get hit, its all about this. Tbh Adamek was more shaken in the fight against Grant.
I've personally never used either term (and have only heard the latter term used, by arseholes), but are you serious that negro = ******? really, news to me.