With all due respect, your fans are arguably the worst in football. You are probably the most successful football team in the history of the sport yet you constantly boo and criticise your own.
You've had the privilege of having some of the greats of the game playing for you, yet it isn't enough. I still to this day don't understand your booing of Ronaldo, who's goalscoring record will never be beaten (I still think he's a twat).
I would then also mention the treatment that both Ancelotti and Bale have received. Bale played a ginormous part in you winning the CL, scoring what was effectively the winner yet he's not safe. Your club is like Liverpool and United in the sense that you believe you have a sense of entitlement to every trophy.