We listened to reports of this on a SW radio from Osh, 60 miles from where it was happening (https://www.flickr.com/photos/dunnet/25419750/) and still no-one really knows how many were killed. It was scary and that's a (historical) fact.

This epic series explains the events of the Second World War. It was so good our history teacher used to show us episodes during classes.

A lovely Open University video narrated by the equally lovely Clive Anderson (making it feel like a long skit from Have I Got News For You).