It already is implemented in America. Political dissidents are harassed by airport security, get their bank accounts closed and credit cards canceled, are banned from services like AirBNB, and get railroaded in the courts.
These are all political censorship against people or groups that aren't doing anything illegal, and the standards are applied differently based on ideology rather than any objective standard.
Thanks, although it's the security checks at the border based on traced political views isn't sourced, I found some.
That's the one that bothers me, as there is hardly ant competition possible in the security checks business.
Airbnb, banks.. all it takes is some open minded provider to make those political police institution to loose ground. Although its matter a time before open minded providers also get pressured to police their customers.
I see what you're saying, but it's just a bit naive. It's not that easy to create a new provider to help political dissidents. A number of web services have been started to do so, and forced to shut down by being cut off by upstream providers. "Just make your own ..." at some point isn't viable, because other companies at every level are making sure you don't succeed.
On the contrary, I believe that ethnonationalism is ethnonationalism no matter where you go, as are xenophobic attitudes. The difference lies in what outcomes these worldviews produce in the world. I'm happy to let this interaction end on that note, thanks.