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A Youtube commenter suggests that the video is based on the Ronan Point tower disaster of 1968, in which a gas explosion ripped the corner off a housing tower. More on that at Youtube: BBC: Ronan Point 50 years on ; or at The Guardian . Ronan Point was probably referenced by the Endeavour episode “Degüello”, in which the “Cranmer House” tower lost its corner thanks to shoddy concrete.