Lacrosse used to be a blood sport centuries ago and has since come a long way. We, lacrosse players, don't need to resort to malicious behavior. Of course, this video only shows one side of the poor sportsmanship. However, retaliation is inexcusable too. Furthermore, yes, we post indoor lacrosse fights, but that is, in fact, a part of that game. Respect the outdoor game and respect your opponents.
In all seriousness, learn something from this video. It's important.