“Sic semper tyrannis” (History.com Staff) That was what the audience heard at Ford’s Theater at 10:15pm, on April 14, 1865. This was said by the legendary actor John Wilkes Booth. The audience thought this was a part of the show, but they did not know that John had already assassinated president Abraham Lincoln. He was in the process of escaping the theater when he said his famous quote. Booth assassinated Abraham Lincoln because he wanted to avenge the South. This was part of his big plan of avenging the Confederacy, which ultimately failed. With all of Booth’s detailed planning, the Union still won the war. John Wilkes Booth murdered Abraham Lincoln. Booth was a famous actor that everybody in America knew about. John found a letter