I'm quite glad you posted your comment. It led me to research those two rulings. I'm making a list of alarming supreme court rulings and these two rulings are valuable additions to my list.

Graham vs Connor 1989 states that claims of excessive force have to be "objectively reasonable." However, police can now use deadly force if they have an "objectively reasonable" belief that there is a threat to their safety. That belief does not need to be based on evidence. See "Police can use deadly force if they merely perceive a threat" on https://www.vox.com/identities/2016/8/13/17938226/police-shootings-killings-law-legal-standard-garner-graham-connor

Tenessee vs Garner 1985 lets police kill fleeing suspects when "the officer has probable cause to believe that the suspect poses a significant threat of death or serious physical injury to the officer or others."

These rulings seem to let police kill people whenever they want and are part of a broad trend by the Supreme Court to gradually destroy democracy while protecting corrupt power.

Are there any other distressing important rulings that you think I should know about?