Commentary A few days ago, I got an email from a fact-checker at PolitiFact. His name is Bill McCarthy. He said he was checking a quotation from me taken from my appearance on the “Ingraham Angle” on Fox News.  We had an exchange of emails that gives a very interesting window into the otherwise obscure world of fact-checking. So I’d like to track our correspondence, because, after all, these are the kinds of checks that get people tagged, restricted, and even banned on social media. Here’s what I said on Fox: “If you follow Jan. 6 at the granular level with the facts that are coming out slowly, they are coming out because the government has been very reluctant to release footage, particularly footage of what happened in the tunnel on Jan. 6, where you now begin to see these cops using massive amounts of force against unarmed Trump supporters, …