Donald Trump Jr. took to Twitter on Wednesday to criticize London Mayor Sadiq Khan while details of the Westminster terror attack were still emerging. “You have to be kidding me?!” Trump Jr. tweeted with a link to an article dating back to September 2016 from British newspaper the Independent. “Terror attacks are part of living in big city, says London Mayor Sadiq Khan.” You have to be kidding me?!: Terror attacks are part of living in big city, says London Mayor Sadiq Khan https://t.co/uSm2pwRTjO — Donald Trump Jr.