Armed Russian police raided the homes of anti-Putin activists ahead of a mass demonstration in a major new crackdown on dissent. The fresh wave of arrests was today compared with the days of Stalin by opponents on Russian language Twitter. Hello1937 was trending on the social networking site—referring to the year 1937, which was seen as the worst for Stalin purges. The coordinated early-morning raids targeted the young politicians who were thought to represent the biggest threat to Putin's 12-year rule. The Investigative Committee said the raids targeted Alexei Navalny as well as Ilya Yashin and Sergei Udaltsov over a...