The demolition of the cathedral
In July, 1931 started the demolition of the Cathedral of Christ the Saviour in Moscow. The last pieces were blown up in December 1931. Some priests refusing to leave the Cathedral were killed for it.
In 1931, Vladislav Mikosha (1909-2004) had just started his career as a cameraman and he witnessed the destruction of the cathedral. He made a film about it. Here you can watch his film and an interview with him.