Martin Luther King, Jr. was assassinated in Memphis fifty years ago on April 4, 1968. On that same day this year, MLK50 events celebrating the life and legacy of Dr. King took place all over the city. You could feel the excitement in the air, reinforced by police escorts zipping famous people around the city, blocked-off streets, and a lot of security. All month long, we as a city have been talking about Dr. King in social media, schools, churches, and around dinner tables …