Nonetheless, I don't want to censor your ideas. Let people make their own minds up. McCarthyism censored communist ideas because they were too dangerous and people might get brainwashed. Was that a good idea too? I though the whole free speech ideal of America was to keep political ideas out in the open where they can stand and fall on their own merits, not silenced groups of violent supporters like you get in Venezuela or Egypt which leads to revolution after revolution.
For an example of what might be a dangerous idea of the left - how about the popular one that blacks are poor because whites oppress(ed) them? That sounds like a recipe for endless failure. Don't work to improve yourself - just get angry at the bogeyman. They did it in Zimbabwe and it ruined them. They're doing it now in South Africa. And American blacks are listening to the left mantra of oppression too. All it can do it make people angry and hateful - what if it leads to race riots?