I’ve updated the 1980 timeline, mostly adding Mariel-Cuba-US dates that seem to show that the McDuffie case and Mariel were two powerful forces, heading along parallel tracks. One example: Saturday, May 17: In the morning hundreds of thousands of Cubans marched against the U.S. Interest Section in Havana. U.S. Customs announced seizing 97 ships in an attempt to stop the Mariel boat-lift. In the afternoon, a six-man jury in Tampa announced four officers were not guilty on all charges related to the death of motorcyclist Arthur McDuffie. That evening, rioting spread through Liberty City and Overtown, resulting in 18 dead and $100 million in property damage.