See this by Tristero at Hullabaloo.
William Buckley And The Tattooing Of AIDS Patients: A Correction
Yesterday, in reminding folks that William Buckley had once called for the tattooing of AIDS sufferers, I mentioned that I heard he had changed his mind after hearing that his pal Roy Cohn was dying of AIDS.
Well, if "the father of modern conservatism" had decided that it was just a little too reminiscent of The Final Solution to suggest that the unhealthy be tatooed, then Buckley reverted to his first instinct towards the end of his life (ht, RP in comments):
The objective is to identify the carrier, and to warn his victim. Someone, 20 years ago, suggested a discreet tattoo the site of which would alert the prospective partner to the danger of proceeding as had been planned. But the author of the idea was treated as though he had been schooled in Buchenwald, and the idea was not widely considered, but maybe it is up now for reconsideration.
A discreet tattoo. A discreet tattoo.