Survey of Downtown San Francisco Reveals Trash on Every Block, 303 Piles of Feces and 100 Drug Needles

The NBC Bay Area Investigative Unit surveyed a section of downtown San Francisco to determine the amount of feces, hypodermic needles, and garbage littering the heart of the city. The results reveal a disgusting and potentially deadly mix of contamination that experts now believe could exceed some of the dirtiest slums in the world.