196_49 interference 49. On 8 December 2008 Mr Nagibin and Mr Ye. notified the Rostov-na–Donu town administration of their intention to hold a picket on the Russian Constitution Day (12 December). The picket was to take place in front of the building of the Presidential Envoy to the Southern Federal District on Bolshaya Sadovaya Street or across the road on Sovetov Square.