1917 — Ten suffragists are arrested while picketing at the White House.
1955 — Emmett Till is murdered in a racist attack.
1981 — John Hinckley pleads not guilty following an assassination attempt on President Reagan.
2017 — An investigation into Niels Högel, a nurse, reveals that he killed more than 86 patients. He may actually have killed up to 300 people in Germany.