Before Columbine, there was a schoolyard massacre that would be the worst mass murder in US history until the Happyland Club fire, Oklahoma City Bombing, and 9/11 terrorist attack. It occurred in Bath, Michigan on May 18, 1927. Andrew Kehoe, a farmer and school board member was having money woes. He was angry that he was being taxed. He was a ticking time bomb ready to exploded. He stocked up on dynamite and had 1,000 pounds by the morning of May 18, 1927. He first destroys his house and then goes to the school and detonates the bomb at Bath...