Demonstrators are calling for answers in the death of /*John Collado*/, 43, earlier this month.
His family says he was trying to help a neighbor struggling with a stranger by putting the stranger in a chokehold.
But it turned out that stranger was an undercover police officer conducting an arrest.
The officer shot Collado in the stomach, killing him.
The /*NYPD*/ has said it's investigating the shooting.
