Categories Articles A witness who testified in the murder trial of ex-Dallas cop Amber Guyger has been shot and killed Post author By crystalg Post date October 5, 2019 Business Insider Feedburner Tags Amber, Been, exDallas, Guyger, killed, murder, Shot, testified, Trial, witness ← How to Succeed In Business by Thinking Like an Outsider → Elizabeth Warren Fires Top Staffer for ‘Multiple Complaints’ of Inappropriate Behavior