A hilarious Saturday Night Live skit from the 1980s had the late Phil Hartman playing Ronald Reagan as an amiable dunce in public but a devious mastermind behind closed doors. That routine came to mind Friday as we read the conspiracy theories on the left about Attorney General William Barr’s public criticism of President Trump’s tweets on criminal cases.

“Critics suggested Barr’s comments to ABC News were simply a coordinated attempt between him and Trump to defuse the outrage sparked by his Department of Justice’s botched…