No, I said supporters who boo their own players / manager are twats. You go to Old Trafford to support your team regardless of how shit they are.
In your opinion yes, but to label anyone a twat for being of a differing opinion is wrong. I see nothing wrong with it & it's part of the game, fans voicing their opinions. Not blindly clapping a sub standard performance and numerous other such performances. Imagine if no one ever complained, where would the world be?