The cause of the death, at a hospital, was multiple myeloma, a blood cancer, his son, Alex, said. Mr. Diaz wanted not only to resolve victims’ problems but also to embarrass the malefactors for their misdeeds. He confronted them, chased them and shoved microphones in their faces in search of answers. At WCBS, Channel 2, where he spent more than 20 years, his “Shame on You” investigations were introduced with a short animation that featured a jingle and a hand with a wagging index finger. When the segment moved to WNYW, Channel 5, it was renamed “Shame, Shame, Shame”; later, on WPIX, Channel 11, it was called “What a Shame!”

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Persons: Arnold Diaz, Alex, Diaz Organizations: New York, WCBS, WPIX Locations: New York City, Greenwich, Conn, WNYW