Mikhail Khodorkovsky’s supporters have put a “Happy 50^th, Mikhail!” banner in the city of Petrozavodsk to celebrate the Amnesty Prisoner of Conscience’s birthday today.  The city of  Petrozavodsk is in the Karelia region of Russia where Mr Khodorkovsky is imprisoned. The poster, which was submitted as an entry in this website’s competition to design a birthday card for Khodorkovsky, appeared in a prominent location in the city last night.