I'm pretty sure Holocaust deniers wouldn't see the direct parallel between gun laws and the Nazis.
“#FirstTheyCame for suppressors—and I did not speak out, because I did not own a suppressor.” (I.e. the NFA…Then, the FFA, GCA, Hughes Amendment, & FAWB…And now, this.)
They will stop at nothing. And we've seen in other countries, even, that creating gun registries has led only to those guns being confiscated by the government.
