Russian activist Sergei Udaltsov arrested for 'justifying terrorism' posts after police raid
• Leftist activist Sergei Udaltsov charged by Russian authorities with justifying terrorism in social media posts • Udaltsov is head of socialist Left Front group and vocal critic of Kremlin • He was previously jailed 2014-2017 for organizing 2012 anti-Putin protests • Udaltsov reported police raid on his home and seizure of devices on Wednesday • Moscow court ordered his arrest on Friday, faces up to 7 years in prison if convicted