Actually, just because a crime is not a valid defence in my country. One must prove it satisfy the public welfare and truth.
Suppose you know a person who committed a crime and be punished years ago and there is no immediate threat of doing it again, revealing that fact is a defamation, unless a person is a public figure like the politician and revealing the fact is important for public welfare.
Suppose you know a person who committed a crime and be punished years ago and there is no immediate threat of doing it again, revealing that fact is a defamation, unless a person is a public figure like the politician and revealing the fact is important for public welfare.