You don't have to go back very far. What about the first day of this season. Hayes looks like running amok first 20 mins so Ledley(?) halves him in the middle of the park and doesn't even get a card. Obviously wee Jonny is knackered and doesn't contribute much to the game after that.
Also Samaras- 3 blatant handballs from the big girl's blouse, fouls awarded, but no cards.
Fast forward to the League Cup tie at Celtic Park. Wilson (or Ki?) assaults and severely injures Lee Cox and gets a yellow. Imagine if big Rossco had done it instead.
As for the other lot of the ugly sisters, it was only about 2 years ago that it was shown that Celtic had had about 5 decisions in their favour and the season was only a few weeks old. For example, the wee cheat Nakamura 'won' a free kick which produced the only goal of the game at Love Street. Meanwhile Rangers had suffered a few wrong decisions such as a disallowed goal at Pittodrie.
If I was of the hun persuasion (which I'm not) no doubt I would be able to remember more details, but that would spoil a fine story wouldn't it.
A plague on both your houses.