You're referring to the controversy this past year, sure. Unfortunately he has already been arrested on charges of DV before:
"UFC fighter Anthony Johnson, who was arrested in 2009 on charges of domestic violence and two other misdemeanor charges, has been sentenced by a judge in Alameda County, Calif., to serve three years probation, along with community service, and domestic violence counseling."
http://www.mmaweekly.com/anthony-johnson-sentenced-from-2009-arrest-2
He plead no contest. Meaning he didn't even dispute it. So yeah, keep sticking your head in the sand re: your mystical blackletes who are incapable of sin or error.