Rupert Sparling reviews Timothy Snyder's latest book, On Freedom. How does Snyder conceptualize freedom, and is his framework useful for understanding our contemporary lives and societies? Sparling evaluates Snyder's take on the concept. 

So Twitter can hide some tweets, and does, and will continue to do so, now with a toothpick precision to tailor its approach according to the law of the land (or landline) where the 140 character chirp has been posted. And everyone is up in arms and ready to boycott the addictive site for… a day.