Russian communist revolutionary died of a stroke in 1924, millions flocked to Red Square to see the body of the man who had led the people in revolt, civil war, and then founded the Soviet Union.
And almost a century later, before the illegal invasion of Ukraine by Vladimir Putin, millions were still turning up to see the man historians call "one of the most significant and influential figures of modern history" - who sparked and inspired communist revolutions in China, Cuba, Mongolia, Congo, Ethiopia, Afghanistan and El Salvador to name but a few.
In all this time, his appearance has barely changed. Even the arrangement, placing, and angle of his hands remain the same as when a million peasants lined up in the harsh winter of 1924 to see their hero lie in state.
This has been no easy task and has, at least at one point, caused developments in biomedical science just to figure out how to keep his cheeks rosy with revolution.
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