This article mentions sexual assault and suicide. We've seen so many athletes crash and burn over the years. Some stories are gut-wrenching and sickening. Others feel more like well-deserved karma. While in some cases, we feel bad for the person. Whether through their own vices, crimes, mistakes, or activism, these 15 athletes destroyed or severely derailed their own careers. 1. Colin Kaepernick lost his career not due to any crimes or horrible vices. He lost his career because he decided to protest against police brutality and the murder of unarmed Black people at the hands of law enforcement. Prior to his viral kneeling campaign , which drew the ire of President Trump , Kaepernick was the quarterback of the San Francisco 49ers and led them to an NFC Championship in 2013, losing to the Baltimore Ravens 34–31 in Super Bowl XLVII. He brought the 49ers back to the NFC championship the following year, and earned a six-year contract extension in June 2014.…