As a ref, a father of HS players, and a father of kids that ref, it should be mandatory that all parents and coaches ref a game before they comment. The refs do get assessed during games, and, in the majority, most do it for the love of the sport and to the best of their ability. There is a continual shortage of refs, so sign up and come aboard. And I agree with the earlier comment, the crap that my kids have put up when reffing, especially from parents who do not know all or any of the rules, or know what the refs have been instructed, is pretty harsh and out of line.