Taxi driver Mostapha Maarouf dutifully sent his tips back to his family half a world away. The 27-year-old planned to join them in July, at his wedding, and he was collecting gifts to bring back to his tiny hometown of Youssofia, Morocco.

That dream died before dawn Sunday when four assailants beat him to the edge of death and then dumped his body in the trunk of his own cab as people watched - and did nothing - from the safety of their high-rise apartments."Eyewitnesses saw him being beaten and dragged by his feet and thrown in the trunk, but no one called 911," Detective Virginia Lopez said. "It's disgusting."

If police had been notified of the man's location sooner, he might have lived, Lopez said.

The attack may have started with a fight over a parking space in the area two blocks from the University of Denver, a neighborhood of middle- to high-income residences with some student housing.

About 40 of Maarouf's friends - fellow taxi drivers and Moroccan immigrants - gathered in an apartment Sunday night to mourn.