The story
The end of the Great Patriotic War, as Russia names its part in the Second World War, in which some twenty-seven million Soviet citizens died. The first Victory Parade was held on Red Square in June 1945, with the captured German standards thrown at the foot of the Lenin mausoleum; the day was a working day for most of the Soviet years and became a public holiday in 1965.
The Immortal Regiment began in Tomsk in 2012: people carrying photographs of their relatives who fought, so that the dead march too. It spread to every city and to the diaspora in the years after, and is now the day's largest procession, with the President walking in it carrying his father's picture.
