This video, unfortunately, only shows the last few seconds of a little league coach's tirade against the ump. According to witnesses, it went on for a lot longer than this, and included "belittling [his own team] and swearing while describing the way they played." That's an awful lot of buttmad for a questionable call, and it led to the umpire declaring the game forfeit.
There are not a ton of details on the incident took place this past Saturday, during a little league all-star game in Oxford, Conn. But we do know these were 11-year-old kids playing—which means it wasn't nearly important enough for the coach to lose his mind like that, and the umpire wasn't getting paid nearly enough to take that sort of abuse.