Neat. Curious to hear your position on waving Communist and Jewish flags.
For that matter, is Communism? Marxist-Leninist governments don't have a great track record, but there are plenty of individual pacifist hippie commies; the ideology of common ownership of production is not inherently violent and racist like Nazism and the Klan are.
You might want to check your Russian History, particularly Stalin's era, to examine the violence inherent to the ideology of common ownership, when applied Soviet style. Scholars debate on whether he killed 8 million or 60 million...
http://www.radionz.co.nz/national/programmes/saturday/audio/...
It eventually got taken down for good after increasing numbers of students from eastern Europe came to the college and pointed out that, to them, it was just as oppressive a symbol as the swastika.
Really this all should have got sorted out around the time of the Spanish Civil War; actual capital-C Communism is too tied up in Stalinism to be trusted any more.
Of course, plenty of people are happy to label their enemies as "communist" for supporting basic reasonable non-Stalinist things like universal healthcare. So the fact that someone is labelled a communist by their enemies, especially in America, means almost nothing.