Retro Report: When SWAT Teams First Appeared on City Streets Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email Police stand watch as demonstrators protest the shooting death of teenager Michael Brown on August 13, 2014 in Ferguson, Missouri. ( Scott Olson / Getty ) Produced by Ellen Frankman Hosted by Todd Zwillich Produced by PRI and WNYC