Responding to requests by German authorities, Twitter has blocked messages from appearing in Germany posted by right-wing group Better Hannover, which has been banned by the local government. It's the first time the company has used a new policy called "country withheld content," which allows Twitter to censor tweets in a certain country where they violate national laws. The company has come under fire for not responding to requests by governments to take down tweets deemed illegal in certain countries or that promote violence, falling behind other social networks. Twitter is considered by many as a bastion of free speech, but some of it has been trouble. One recent trend has involved users posting swastikas as a typewritten character and making light of the Holocaust. But some say the move by Twitter to selectively block tweets could be used to promote censorship by repressive regimes that seek to stifle dissent.