How Charlie Chaplin used groundbreaking visual effects to shoot the death-defying roller skate scene in Modern Times (1936) https://t.co/MI5T8YAzEq https://video.twimg.com/ext_tw_video/1784674551508443136/pu/vid/avc1/948x720/chNgtHDoFwGhbsMS.mp4?tag=12