The tactic you employ here (remotely diagnosing the ethnic background of poster who you diagree with)doesn't contribute much to "working to roll back decades of governmental largesse, to root out political fraud and corruption, and to champion causes which further conservatism in America," IMHO.
How is that any different from the tactics you decry on LF? Why is someone's ethnic background relevant?
You need to worry less about the color of people's skin and worry more about what they actually say.
Not a "tactic", really. The poster's constant harping on "a host of nations" nuking Israel shows a particular kind of decoupling from reality which is most commonly found in the Arab press. I have some hilarious examples I could repost here, but I'm sure you have seen a few of them :).