"NEW YORK The homeless man lay face down, unmoving, on the sidewalk outside an apartment building, blood from knife wounds pooling underneath his body.

"One person passed by in the early morning. Then another, and another. Video footage from a surveillance camera shows at least seven people going by, some turning their heads to look, others stopping to gawk. One even lifted the man's body, exposing what appeared to be blood on the sidewalk underneath him, before walking away.

"It wasn't until after the man had been lying there for nearly an hour that emergency workers arrived, and by then it was too late. Hugo Alfredo Tale-Yax who police said was stabbed while intervening to help a woman being attacked had died."

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