I hate him, but he's right.
The fans have every right to be angry, upset & feel betrayed. But as any Liverpool fan knows. You NEVER boo your own for poor performances. I'll stay at that level cos I have boo (more heckled) one player. Spit the fucking dog. I wished harm on him cos he's a despicable human being, however I did it away from the game, not during. Never during.
You back the players no matter what when they're on that pitch.