Sentence:  The game was engulfed in controversy when Rodwell appeared to win the ball cleanly in a midfield challenge with Suarez. The tackle drew an angry response from Liverpool's players- Lucas in particular as Suarez writhed in agony - but it was an obvious <WSD>injustice</WSD> when the England Under-21 midfielder was shown the red card. 
Meaning of the word marked with <WSD> tags:  Unfairness; the state of not being fair or just.