Merrick Garland had the right to remain silent — he should have used it. Instead, the attorney general of the United States, a man who has spent three years overseeing what used to be called “justice system” decided to take to the pages of one of the country’s biggest newspapers to tell Americans they haven’t been seeing what they’ve actually been seeing. And it’s already backfiring. In a commentary published Tuesday by The Washington Post, Garland attacked his fellow citizens who have watched as his Justice Department has given terrorist treatment to parents worried about their kids educatio…