Which brings us back to your two skinheads and your taking at face value any of the 'facts' they present to you to support their views. I.e, if they tell you the Slovenian Finance Minister is, and 7 of Slovenia's largest banks are run by Jews, (I'm just making this up as a hypothetical, by the way) do you believe them or do you research the matter on your own?
In my view, I'm not lending them any credence and will check everything they say.
Much easier just to get your information from a better source, no?
And if it turns out that they help old ladies across the street in their spare time and have some interesting information in regards to a seperate topic, that's fine - but it doesn't repair the relationship between their views and their credibility in my eyes - the one erases the other.
As far as the communists/socialists are concerned, all I actually wanted to say is that even among them there are differences, not all of them are Leninists, Maoists, Stalinists or Milosevic supporters. Even if they critisize NATO or the Hague court, it doesn't mean they like Milosevic or the kind of policy. I also wouldn't throw them automatically in the same bag as Neo-nazis that support Hitler and his policy. Especially since many of them don't promote a hateful, intolerant or even violent actions as is the case with the neo-nazis.
As for believing people, I would definetely research the matter on my own, no matter how close they may be to me in ideological views or in any other way. I don't take everything for granted, that's for sure.