The reason I've always been suspicious of something called House Un-American Activities Committee (and any equivalent in the Senate) is that such investigations are seldom limited to what I would call Un-American activities. So what would I classify as Un-American? Basically attempts to over throw the US government, abrogate the US Constitution, or engage in treasonous activities, especially if done so by means of violence. That would make targets of groups on both the right and left. Say (reflecting my age) the Ku Klux Klan or the Weather Underground. What it would not include is advocating and attempting to implement through the ballot box "Socialist" or "Communist" labeled policies. Or the Civil Rights movement. Or the Anti [Vietnam] War Movement. You get the idea I presume. And that ends my discussion of a politicized thread.