Dennis Prager has an article at Townhall.com that should be read by every Lefty.
Prager distills the essence of the Left into one paragraph and any self-respecting Lefty would agree that this describes them to a tee:
‘[A]s you go further left on the political spectrum, it becomes increasingly difficult to blame the "weak" for any atrocities they commit. The Left does not divide the world between good and evil nearly as much as it does between rich and poor, and between strong and weak. Israel is stronger and richer, so Palestinian terror is excused. White America is stronger and richer than black America, so black violence is excused. The West is stronger and richer than the Muslim world, so Muslim violence is explained accordingly.”
Absolutely brilliant, and completely unassailable.