The Catalans are loony leftists who hate the Church, so they and the Muslims are on the same track. Expect to see more of this.
Catalans are despised by other Spaniards as they suffer from a superiority complex, pretend they aren’t Spaniards, aka. identify with France, support gay rights, anti-clerical, leftist, etc. Franco’s troops really tore-them-a new-one when the conquered them in 1938.