This is a very good select to talk on, and your analysis is so accurate. It is my observation also, when I look to sports, football and rugby.

Although, Rugby is much more violent sport, same time rugby players come in more physical contacts and sometimes battling out for better control,they seem to have more respect on match officials.

But, hell no to football.They lack in manners and codes of conduct, as you said, outburst of anger and attacking the referee. Thats terribly insane!!

Hope they would learn and reshape in the future.. Good one of sports write. I acknowledge.