Things I don't understand

From 365gay.com comes a report of a gay bashing. What I don't get is why a man would shout derogatory names such as 'faggot' and then sexually assult the same man. If you're against men who have sex with other men, then wouldn't you skip the sexual assault of another man? But then there have been a number of studies that show the most homophobic reactions come not from those men who are heterosexual, but those who are bisexual or homosexual. So beating up someone and getting off on it seems to be what gay-bashing is all about. At least in this instance. If it weren't for the violence against another person I'd call the gay-bashers pitiful. As it is they just need to be stopped. Violence against someone else just isn't right.