The critics and the lawmen

Cross posted at Political Arguments.

Eugene Volokh states the obvious which, sadly, needs to be stated.

A couple of readers argue that the group [American Gold Star Mothers Inc.] is a private group (which it is, despite its federal charter, which really doesn't give it much by way of special benefits beyond what other nonprofit corporations have), and should be free to set whatever rules it wants, and also free to decline to defend them substantively. I agree entirely; and the rest of us are free to criticize them.

(Emphasis added)

Why is it so hard for some people (the "couple of readers" above) to understand that saying that something is bad and asking that the government take action against it are two different things?