About four US President was assassinated while in office, while others were able to survive those attacks. Abraham Lincoln was the first American president to be assassinated. This actually happened on April 15, 1865, when president Abraham Lincoln together with his wife, visited the Ford's Theater to see a popular play known as 'Our American Cousin.' The unfortunate incident happened when an actor by the name John Wilkes Booth put a bullet into his head.
Abraham Lincoln couldn't survive it because he was severely wounded. Another US President that was killed while in office was James Garfield. He was attacked on July 2, 1881. Also, President William McKinley was killed on September 6,190, when a man named Leon Czolgosz forced his way out of the crowd and shot the president twice. The fourth US president who was killed while in office was John F. Kennedy. He was killed on November 22, 1963.