How safe is Gran Buenos Aires (Buenos Aires suburbs)?

The areas west of the Avenida Gral. Paz, como: General San Mart�n, Avellaneda, Tres de Febrero, Ramos Mej�a, Mor�n, Haedo, Villa Bosch, Villa Ballester, Ciudadela, Villa Lynch, Villa Sarmiento, Billinghurst, etc.