Of course they're back, they've been back since the 1960s, or 1910s if you wanna go back slightly further.
And as a reminder: Modern gun control laws were started because the Black Panthers also trained and learned to defend themselves from far right militias to express the right to vote and free speech. We didn't start doing anything when the KKK locked and loaded, only when people started defending themselves from the KKK.
I realized this is why they're freaking out about Antifa. The right wing has militias (of several forms), so they project that Antifa is a militia. It's always projection.
Also take note of how they call everyone they don't like a Communist? You know who else spent a lot of time obsessing over Communists and murdering them?