Facebook has temporarily blocked the page of a German author after he placed an ad there for his new anti-migrant book. The message from the social network read that the content of the posting “violated its guidelines”. The book by Udo Ulfkotte, titled ‘Boundless Criminal’, exposes alleged cover-ups by authorities and mainstream media of crimes committed by migrants. The author and journalist is known for a staunch anti-immigrant and anti-Muslim stance. We asked him about Facebook blocking his page.