I was astonished a couple of weeks ago when a British lawyer actually took J.K. Rowling to task on this score; lawyers, at least, shouldn't be so stupid.   Rowling was a signatory to the Harper's letter about "cancel culture." She didn't thereby forfeit her legal right to be protected from unlawful speech, such as libel.   "Cancel culture," of course, as we saw yesterday, has nothing to do with legal remedies for unlawful speech or action.