Ah see the problem is who is the person to ascertain what is rational and what is not? Where can you draw your lines in the sand on every though or ideology and who determines it? I mean if we say for example......I dunno......that multiculturalism is no good, how do we examine if this is summarily and without exception, peer reviewed and without doubt rational and proven so? Oh no doubt you will be able to get many to agree with you and some may raise "good points" to support the theory BUT is it proved. Even is the points raised are sound, cogent, coherent, logical, coherent and rational to you and others......it is not proven so.
Of course you could be arbitrator of all that is rational and logical but then I see your views on the holocaust so.........