Police say Jose Samayoa, 57, was crossing the street when he was struck and killed by a vehicle that fled the scene.
Police believe a second vehicle also hit Samayoa and didn't stop.
When a Good Samaritan came to Samayoa's aid, she was hit and injured by a third vehicle.
That driver stopped, only to be attacked and robbed of his cell phone by an angry mob.
Relatives of Samayoa are looking for justice.
"If they have a conscience they can come forward too because it wasn't just an accident, we lost a family member, and we won't ever see him again," said Samayoa's niece, Vicky Mendez.
Police are looking for that initial hit-and-run driver.
They said he was in a late 1990's or early 2000 Ford Windstar van that was light grey or white in color.