Religion ... has certain ideas at the heart of it which we call sacred or holy or whatever. What it means is, 'Here is an idea or a notion that you're not allowed to say anything bad about; you're just not. Why not? - because you're not!'  If somebody votes for a party that you don't agree with, you're free to argue about it as much as you like; everybody will have an argument but nobody feels aggrieved by it.  If someone thinks taxes should go up or down you are free to have an argument about it.  But on the other hand is somebody says 'I mustn't move a light switch on a Saturday', you say, 'I respect that'.
Why should it be that it's perfectly legitimate to support the Labour party or the Conservative party, Republicans or Democrats, this model of economics versus that, Macintosh instead of Windows - but to have an opinion about how the Universe began, about who created the Universe ... no, that's holy? ... We are used to not challenging religious ideas but it's very interesting how much of a furore Richard (Dawkins) creates when he does it!  Everybody gets absolutely frantic about it because you're not allowed to say these things.  Yet when you look at it rationally there is no reason why those ideas shouldn't be as open to debate as any other, except that we have agreed somehow between us that they shouldn't be.