Users of the WiFi in the San Sebastian de los Reyes neighborhood have also been blocked from making searches using terms like "homosexual," the newspaper 20 Minudos reported.
Cogam, a Madrid group, and FELTGB, a national one, have both made official complaints about the blocking, TheLocal.es reported. Officials at the town hall say the problem is with the company that set up the system.
"This company categorizes pages which could be harmful like this connected with online gaming, pornography or violence," an official explained.
The president of Cogam told 20 Minudos the group's site is definitely not a porn site.