I don't think you know what May Day is either. Go google some about its history, meaning and origin. It's also called international workers day. You know, the day for the proletariat to rise up and stop capitalism.
That's already been linked for your education, but you're apparently ineducable, being steeped in far Right rhetoric & delusion.
Just calling people Commies is denial of what Righties always claim they're so fond of- the marketplace of ideas. If your ideas were so great, we wouldn't have had the financial meltdown, bailout & massive un- and under employment of today, nor millions of homeowners still facing foreclosure, many more hopelessly underwater, chained by debt.
If your ideas are truly better, then people should be able to see that, and you wouldn't have to resort to slander and fear based emotional boogeymen to make your point.
You *are* desperately afraid, I think, and allow that to whip you into a frenzy of delusion on an all too frequent basis. It's sad, it really is.
