my comment was kind of a throwawy comment to hold onto the basic idea.

I fully agree that keeping leftists as slaves is infeasable (not to mention immoral!)

Some method of excluding them from public influence is the best way to go about it, but there are some problems even in that. An older look at the problem
https://steemit.com/informationwar/@stevescoins/in-the-long-run-dealing-with-the-left-mass-reservations-on-pinochet-airlines-are-not-necessary