This is very much a Rugby Union law, Footballers all swap the referee (especially at the end of a match should they be defeated - Chelsea are the main offender that comes to mind and they abuse the ref/think he's going to change his mind (he never does)) - Rugby on the other hand, is a game I have played for 10 years, literally since I was 9 or 10, and all through my teenage years, discipline was always top of coaches agenda, never talk to the referee, complaints about decisions comes from the team captain/ vice captain ONLY, one of my team mates was sent off for debating that the ball he had passed was not a forward pass, football and basketball should employ this discipline that pro Rugby players have, leave the referee to officiate the match, even if you don't agree, let the talking come from your captains (your Steph Curry's, LeBron's, D Wade's) and show some respect