On October 26, 2020, Walter Wallace Jr., a 27-year-old African-American man, was shot by Philadelphia police officers Sean Matarazzo and Thomas Munz in Cobbs Creek, Philadelphia, Pennsylvania. The two officers arrived in the area to respond to a domestic dispute. When they arrived, Wallace walked out of his house carrying a knife. The two officers backed away while telling him to drop the knife shortly before they each fired several rounds at Wallace, hitting him in the shoulder and chest. He later died from his wounds in the hospital. Wallace's family stated that Wallace was having a mental health crisis.