Because we like to imagine that our heroes are perfect. Martin Luther King, Jr. was an heroic defender of civil rights for blacks; he also cheated on his wife

Because we like to imagine that our heroes are perfect. Martin Luther King, Jr. was an heroic defender of civil rights for blacks; he also cheated on his wife & plagiarised. His misdeeds don't make his deeds any less great, but … we don't like to think about them.