Ben Johnson winning the World Championships in 1987 and the 1988 Olympics was the biggest injustice in US sprinting history.
Most posters on LetsRun weren't around in the 1980s, but that was back when sprinting was big in the USA... Carl Lewis, Calvin Smith, FloJo, Evelyn Ashford, Jackie Joyner-Kersee. School kids who weren't runners knew who these sprinters were.
Carl Lewis spoke out against Johnson, without naming him by name, and caught a huge amount of flack for it. Ironically, Johnson's doping tarnished Lewis's image. He never recovered even after Johnson was outed.