It's way less persuasive than you think it is.
Not to mention you must be unfamiliar with news of just that happening in Germany.
Perhaps we shouldn't allow YOU to vote, as proposed in this discussion for those who are supposedly seen as having poor critical thinking skills.
And we shouldn't allow you to teach your kids either, nor to have the option to send them to the school of your choice. All under the logic of this discussion. Enjoy.
Suggesting that someone's children be taken from them is absolutely the threat of showing up at their doorstep with guns. Do you think people just say "no, it's no big deal, take my kids that I love."? Not a chance.
I'm not sure if you're being a dick or if you haven't thought this through (or both).