>There's a group of parents who try to cure their children's autism by making them drink diluted chlorine bleach and giving them enemas of the same stuff.
That's a crime. Full stop. Those parents should be charged to the fullest extent of the law.
>They get their advice from a couple who make money from the sale of books, supplements and services related to this horribly misguided and abusive practice. Would it be wrong to try to silence the perpetrators?
YES IT WOULD! (I wish I could make this larger, bold, blinking, and shouting.) Writing that one should do something stupid and dangerous is not a crime, otherwise half of the clickbait articles on the web would result in jail time for the posters.
Thoughts, in and of themselves, don't MAKE people do anything. The person hearing them always has a choice.
Now if you want to make it illegal to SELL their supplies because they're a risk to public health then go right ahead. A restriction on commerce is not a restriction on speech. We criminalize representing oneself as a doctor if you're not. What you're not allowed to do is shut someone up if you don't like what they're saying.
