The Report found that 

neither domestic law nor police practices comply with the obligations of the U.S. under International Human Rights Law and standards governing the use of force. U.S. law is woefully inadequate in protecting people of African descent from police violence. The U.S. does not have a national legal framework governing the use of force. Moreover, the U.S. Supreme Court has set few limits on the use of force by law enforcement officials ... and the limits that have been set do not meet international standards. 

The report further noted that

since 2005, approximately 15,000 people have been killed by police in the U.S. ... During that same period, only 104 police officers have been charged with murder or manslaughter for killing a civilian while on duty and of those, only 35 were convicted of any crime.... Attorney General of Minnesota, Keith Ellison, stated in reference to the prosecution of police officer, Derek Chauvin, for the killing of George Floyd, “Trying this case will not be an easy thing. Winning a conviction will be hard. History does show that there are clear challenges here.” 

International Commission of Inquiry Report (April 2021)