But leaving that aside, in the vein of the troubling implications of language, the line in question doesn't actually say "should" in the first place; it says "how to" -- as in, giving someone information she might be able to use, whether she does or not.

*g* you caught me. You're right. And that's a very neat breakdown, may I also add.

So basically, if the point the line's supposed to make is that saying people "should" protect themselves from attack is a subtly dangerous use of language, I think it might work better if it were itself more carefully phrased.

I don't know if that was the OP's point, but it's mine, anyway. Thanks for pulling me up. :)