Found this rare footage of the execution of Leon Czolgosz from 1901. He was the assassin of 25th US president William McKinley. It's quite surreal seeing Czolgosz's body shake as he is being executed. McKinley was the 3rd US president to be assassinated and was the 3rd US president to be assassinated in just 36 years from Lincoln's assassination to his own with James Garfield in the middle.
At around 1.20 he is being led to the electric chair.