You can have lots of fun singing for your team, getting behind your team in general, and yes you can have the banter but slagging off the players for no good reason is out of order, and not a fan imo. Use to be just this way when I was a kid 20 years ago and was fantasic, with a great atmosphere. Now it seems to be the attitude I pay my money so I can tell a player to go and die, for example I don't think we are far from the time when and player gets serioualy hurt on a football picture.
Love football players or hate them for their money grabbing ways they still have the same right not to be verbally abused which lets face it in the work place would be unacceptable. To be honest if I was ricketts and had scored the goal on saturday I would have celebrated big time.