When I lived in Berlin, May 1 always spurred the Autonomen (anarchists) to riot. They were dumb as dirt in their tactics. Their goals were clear as mud. And yet, I miss May 1 being a day of protest. Some of my colleagues spent today handing out flyers protesting the university’s bassackwards priorities. (Money for coaches, yes! Money for faculty? Nah, let’s cut ‘em, they’re overpaid anyway!) Me, I was embroiled in domestic responsibilities and got no farther than the post office.
But since the hardy-ever-right wing sees even lazy-ass me as a socialist, here’s a nice clip on the Spartacist Uprising in Berlin, 1919. It wasn’t on May Day and the German Communists were tactically and strategically not much better than the Autonomen. But Billy Bragg (who wasn’t on the spot, either) gives a surprisingly rousing rendition of “The Internationale.”
(Go here if you can’t see the clip.)
Of course, since this May Day also falls on a caturday, I’m obliged to say something about cats and politics. Cats are passionate socialists – with respect to humans, who are required to share everything with their kittehs. For themselves, they’re radical libertarians anarchists. Sort of like this:

Capitalist kitteh from I Can Haz Cheezburger?
Happy May Day, everyone!
Patron cat of Kittywampus (1985-2001)