On March 19, Donald Trump Jr. sent an email via the firm that manages his father’s email list, Campaign Nucleus, announcing “a HUGE advance in the culture war.” That culture war, Trump wrote, is “coming to corporate America.” He added that conservatives have a “new” tool to fight back against “woke” workplaces: the “free to work” job board RedBalloon. As an incentive to create an account on the website, Trump offered 20 autographed copies of his latest book, Triggered.

“The big job boards like Indeed and ZipRecruiter are…