Wealthy patrons financed construction of hoseiniyehs in urban areas to serve as sites for recitals and performances commemorating the martyrdom of Hussein, especially during the month of Moharram. In the 1970s, hoseiniyehs such as the Hoseiniyeh Irshad in Tehran became politicized as prominent clerical and lay preachers helped to lay the groundwork for the Revolution by referring to the symbolic deaths as martyrs of Hussein and the other imams in veiled but obvious criticism of Mohammad Reza Shah's regime. Institutions providing religious education include madrassas, or seminaries, and maktabs, or primary schools run by the clergy.