Power Line's Steven Hayward posts two charts showing most recently the effect the death in police custody of George Floyd had on Black homicides and motor vehicle deaths. The charts are labeled CDC which I presume means they come from the U.S. Centers for Disease Control and Prevention. The years for 9/11, Ferguson, and Floyd are 2001, 2014, and 2020 respectively.
I observe both types of black deaths became dramatically more prevalent as the reactions to Floyd's death happened.