In a shocking series of events that is still under investigation, Las Vegas police on Friday shot and killed Trevon Cole, 21, while serving a warrant that claimed Cole was selling marijuana. According to reports, Cole’s 20-year-old fiancé, Sequioa Pearce—who is 9 months pregnant—was forced to kneel and held at gunpoint in the moments just before Cole was shot. A police spokesman told the Las Vegas Review-Journal that undercover officers had bought marijuana from Cole three times before the warrant…