Baj was devoted to anarchism and this expressed itself in his works. His vast canvases were beautiful and often funny. When it was exhibited in Italy in 1972, his Funeral of the Anarchist Pinelli (thrown from a police station window and made famous by Dario Fo's play Accidental Death of an Anarchist) led to police commissioners marching in and closing down the gallery.
Born into a well-to-do family in Milan on October 31st 1924, he exhibited a rebellious streak early on when, as a boy, he stood to mock attention in front of a fascist parade. He quit Italy to take refuge in Geneva in 1944 to avoid conscription into Mussolini’s army.