Really?
To me it's clear as day as a pen and a red. Cisse's through on goal and the CB shoves him out of the way, if that's not a penalty and "denying a goalscoring opportunity" what is? I'd be p*ssed if it went against us, but only because our CB was so f***ing stupid to make a challenge like that.
No way in the world was that a penalty. It was shoulder to shoulder, definitely not a red.