Real Madrid fans called for President Florentino Perez to stand down following their first derby defeat to city rivals Atletico Madrid in 14 years, according to the Independent.
Real fell to a 1-0 defeat against Atletico on Saturday night as Gareth Bale had to settle for a starting place on the bench following his injury troubles.
Diego Costa's 11th minute strike was enough for Atletico to take all three points and the bragging rights for the city.
Following the match chants were heard outside the ground for former manager Jose Mourinho as the pressure on current boss Carlo Ancelotti builds.
It has also been said that many of the Madrid following are unhappy with President Perez after his decision to sell fans' favourite and midfield dynamo Mesut Ozil to Arsenal.
The decision to allow the German international to leave the club came after the world record transfer of Gareth Bale - who graced the Bernabeu pitch for the first time on Saturday after coming on as a 46th minute sub.
But the Welshman was unable to create a piece of magic - like he often did for Tottenham last season - and salvage a point for his side.
Barcelona and Atletico have now opened up a five-point lead at the top of the La Liga table after seven matches.
Madrid face Danish side Copenhagen in the Champions League group stage on Wednesday night as Ancelotti's side look to bounce back and recreate the form that saw them humiliate Galatasaray 6-1 in their first European match of the season two weeks ago.
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