It's the day we remember the 10s of millions lost to communist tyranny:
http://catallarchy.net/blog/archives/20.../01/may-day-2006-a-day-of-remembrance/
(follow all the links)
http://catallarchy.net/blog/archives/20.../01/may-day-2006-a-day-of-remembrance/
(follow all the links)