Quote from fhl:
What makes you think it's irrational?
Guilt-by-assocation, lack of evidence, arguing over a birth certificate, accusations that he's a Muslim, accusations that he's secretly cavorting with terrorists -- pretty much 100% not focusing on his policy paper, nor budget estimates, nor policy differences, nor competency differences.
Oddly, the points seem to be "Obama is eeeeeeevuuuuuuuulllllllll" rather than a calm discussion of policy differences that a person would see in a rational discussion.