The Vidic red reminds me of the Nolan red that Michael Oliver gave at Anfield. Challenges that are unlikely to hurt the opponent, but 100% intent to kick the player with 0% intent/chance of getting the ball. In that sense, it is very pure "violence", even if not that violent. I have no problem with reds in both instances.
Rafael's challenge was a horror. He's a horrible little fellow and it should have been straight red.
José Mourinho PL Home record:
Games: 71
Won: 56
Drawn:15
Lost: 0
Goals: 148
Conceded: 37
Points: 183/213