According to The Moscow Times, Russia is demanding that Bulgaria take steps to prevent vandalism of soviet statuary.
This is what the Monument to the Soviet Army used to look like:
On June 17, 2011 the monument was painted overnight by unknown artists, who "dressed" the Soviet Army soldiers as American comics heroes and characters: Superman, Joker, Robin, Captain America, Ronald McDonald, Santa Claus, Wolverine, The Mask, and Wonder Woman, with a caption underneath which translates as "Abreast with the Times" (in Bulgarian "V krak s vremeto", literally "In pace with time"). The monument was cleaned in the late hours of June 20, 2011. The event was widely covered by the international media and provoked serious pro and anti-Russian discussion in the Bulgarian society. The story was filmed in the short documentary In Step With The Time directed by Anton Partalev and includes anonymous interviews with the artists. The film won the second prize in 2013 IN OUT FESTIVAL in Poland.Top photo: