He was taken to a nearby hospital where he died of his wounds, and the Orleans Parish Coroner’s Office called the death a homicide. It remains unclear whether Mr. Moye was intentionally targeted, and the police did not answer questions about whether any suspect had been identified.

“The incident is the subject of an active and ongoing investigation,” said Beau Tidwell, a spokesman for the New Orleans Police Department. New Orleans has one of the highest murder rates in the United States, with 157 murders in 2017.

Mr. Moye was originally from Poughkeepsie, N.Y., but lived in the Charleston area and was visiting New Orleans at the time of his death, his sister Kimberli Duncan, 46, said in a phone interview on Wednesday.

“He was always fighting for justice, equality and fairness,” she said. “He always wanted to do for others. He never put himself first.”