May 1 is Labor Day, international style. It's celebrated, often as a day off from work, in many countries around the world, except in the nation that was the reason for May 1 becoming the laborer's own day: The United States (can you say "ironic"?). See Wikipedia's entry on May Day for that particular background story.
In Norway, May 1 is a national holiday and traditionally labor unions, labor/socialist parties and special interest groups gather for parades, demonstrations and speeches. My impression is that it's very left-wing even for a left-wing nation, and I, with my American background, always end up feeling dark blue on such a day. But I attended today, for the first time ever, walking in the parade with the local plumber's union. (My friend's a plumber; no cracks about his crack, thank you.)
According to the speeches, the "man" is still out to get us, Israel is out to get Palestine, and the non-leftist politicians are idiots. In local news, the weather gods were out to get the kids' balloons and were quite successful: A marlin, a heart and a lion all went due south, over the Strand.
Here are a few snapshots from a sunny and windy day in Bergen, May 1, 2006: