The irony of Ode to Joy being inspirationally murderous makes me happy.
It's been used by various political movements because it's such a catchy song. Politicians in the U.S. do the same thing at political conventions. Music as an emotional heightener, to reference the book version of A Clockwork Orange (which has a different ending).
I'm gonna get myself in fighting trim... scope out every angle of unfair advantage. - The Mountain Goats.