Highlights of this day in history: Three civil rights workers disappear in Mississippi; John Hinckley, Jr. found not guilty by reason of insanity for shooting President Ronald Reagan and three others; Britain's Prince William born. (June 21)

Subscribe for more Breaking News: http://smarturl.it/AssociatedPress
Website: https://apnews.com
Twitter: https://twitter.com/AP
Facebook: https://facebook.com/APNews
Google+: https://plus.google.com/115892241801867723374
Instagram: https://www.instagram.com/APNews/
​