When you're a coach, your job is to guide your team, teach them and help them get better each and every game, especially if you're coaching children. There's always a line and we've seen more and more coaches cross that line and have to face the consequences, which usually result in their expulsion from the league, as they should.
Not only is this completely reprehensible and disgusting, but it seems according to another Twitter account, this isn't the coaches first time acting violently towards his players, in which case it's way past time for this man to be tossed out of any league, period.