1. The German government requested that Twitter block access for people in Germany to an account run by a Nazi group operating inside the country. In Germany propagating Nazi ideology is now illegal, and thus Twitter honored the request of the government. Twitter has stated that they try to be apolitical - meaning they do not take sides and they do not block posts as they value freedom of speech and of expression, however in this case they went against their normal behavior.
2. In France, Twitter removed anti-Semitic postings related to an ongoing investigation. Each day there are thousands of racist posts concerning all types of groups, so why does Twitter not remove all of them?
3. In a strange reversal, the Saudi Arabian government is allowing access to Twitter, and even allowing citizens to voice complaints against its King and government - something that is illegal in Saudi Arabia. However the government is allowing such criticisms only online... not in print or in public.
October 18: "Twitter Blocks Access to Neo-Nazi Group" (Link Below)
http://www.nytimes.com/2012/10/19/world/europe/twitter-blocks-access-to-neo-nazi-group-in-germany.html?_r=0
October 19: "Twitter Removes Anti-Semitic Postings, French Jewish Group Says."
http://www.nytimes.com/2012/10/20/world/europe/british-police-investigate-twitter-account.html
October 21: "Twitter Gives Saudi Arabia a Revolution of Its Own"
http://www.nytimes.com/2012/10/21/world/middleeast/twitter-gives-saudi-arabia-a-revolution-of-its-own.html?pagewanted=all