Worst place to dodge in Cap Federal at night?

Go to Barracas, head down to the Riachuelo and follow it upstream through Pompeya, Villa Soldati, Villa Riachuelo and up to Villa Lugano - don't forget visit attractions like 1-11-14, Ciudad Oculta, Villa 21, Barrio Presidente Rivadavia, etc - you'll be wishing you were in Caminito, Retiro, Once or Constitucion.