 He unified the transit system, directed the building of low-cost public housing, public playgrounds, and parks, constructed airports, reorganized the police force, defeated the powerful Tammany Hall political machine, and reestablished employment on merit in place of patronage jobs.La Guardia is also remembered for his WNYC radio program "Talk to the People," which aired from December 1941 until December 1945.La Guardia was seen as a domineering leader who verged on authoritarian but whose reform politics were carefully tailored to address the sentiments of his diverse constituency.