CNN — Donald Trump and Donald Trump Jr. have come to the defense of a one time social media influencer who has been convicted of election interference and has a well-known history of pushing deeply racist, antisemitic, anti-Muslim and homophobic content online. In a video posted by his campaign in early December, former President Trump blasted President Joe Biden and “his henchmen” for allegedly trampling on the First Amendment rights of Douglass Mackey, a longtime supporter of the former president who ran an anonymous, notorious Twitter account in 2016. Trump accused Biden of seeking to jail Mackey for “sharing a...