I remember the guy who died having sex with the horse. As I recall he was indeed kicked to death or stepped on. As it turned out, there weren't any anti-bestiality crimes in Washington state at the time, so technically what he was doing wouldn't have been considered illegal, which is what prompted the state to hastily pass some laws.
Poor dog! Can they blame her for being aggressive? I hope they get a behaviorist other than Cesar to work with her, though, I don't think much of him and I think he might make her worse.