Banners included Ralph Wiggum exclaiming, "I like Mondays, I am special," in either bad English or perfect Wiggum, and Otto complaining about the driving conditions on Mondays. Keep in mind that this occurred in 2014, well over a decade after The Simpsons stopped being a dominating force in the American zeitgeist.
But their protest only scratches the surface of how absurdly popular Los Simpsons are in Spain. Spaniards can eat donuts at Homer's Home, because the Mediterranean cares little for your so-called copyright laws:
"Mmm, trademark infringement."
Several of the donuts are also inspired by the show's characters, which means that you can finally live out that lifelong dream of taking Marge out and then eating her.