Robert Knox

Aug 21, 1989 - May 24, 2008 (18 years old) in Kent, England, UK

Knox was stabbed to death in 2008 at the age of 18 while saving his brother from the attacker. This was just days after shooting his breakout role in Harry Potter and the Half-Blood Prince. His death was headline news both in his native Britain and abroad, and served as a wake-up call for the issue of knife crime.