Liam Roberts' reckless tackle on Crystal Palace striker Jean-Philippe Mateta is hard to watch, and even harder to understand.
The Millwall goalkeeper rushed out of his goal during his side's FA Cup fifth round defeat by the Eagles on Saturday and collided with the Frenchman's head as well as the ball.
Mateta was hospitalised by a horror challenge, while Palace chairman Steve Parish, who branded the challenge as the worst he has ever seen in football, accused the Lions keeper of endangering the striker's life.
To make matters even worse, as Mateta was being provided oxygen and transferred to a stretcher to be taken to hospital, Millwall fans sang: ‘Let him die, let him die.