don't speak ill of the dead

don't speak ill of the dead

It is immoral or objectionable to say malicious or defamatory things about someone who has passed away. A: "Ah, Tom was just a selfish old bigot." B: "Mary! Don't speak ill of the dead!" I know people say don't speak ill of the dead, but we shouldn't forget the misdeeds of those who were once in power, either, lest history repeats itself.
See also: dead, ill, of, speak