...an minimum age restriction? After all, you have to be 18 to buy tobacco where I com from and 16 to get a beer in a pub. I believe you must even be 21 in some states in the US!
If religion is a drug, shouldn't government ensure, that kids under the AGWof, say 18, don't get any exposure to it?
If I meet a marxist, communist or nazi, then I can ridicule and condemn his political opinion any way I want to and try to humble him in a debate with facts and figures. And as long as neither party resorts to violence, it's socially ok and acceptable.
If I try to do the same about some ones...