I remember, under W, the similar "camps" stories circulated in the ether. Then it was 'reported' the camps were placed near airports under the guise of isolating "Bird Flu" victims upon entry into U.S. But, don't be fooled, they were really internment camps to house critics.
I think we can engage some people intellectually. Ask questions, such as, how implementation of such a "plan" might be carried out. Hopefully, you'll get to a point when the light goes on & your friend says, "I never thought of it that way, you may be right."