I think, when it comes down to it, if a writer decides to talk about religion or politics, they should do so only if they are fully aware of the implications and willing to be responsible about what they say. This means that ranting is definitely not an option, and neither are blanket statements or an unwillingness to look at everyone as human beings (and, by everyone, I mean not just those that are part of the “in group”). But it’s can be awfully difficult to shoulder this responsibility, which is why I think that it’s a decision not to be made lightly.