(Portland, OR) -- Parents of students at David Douglas High School in Portland have received a warning about social media posts targeting students, athletes, coaches and staff. The posts use artificial intelligence to create racist and anti-immigrant photos. The school says Portland Police have been notified. Some of the posts reference Rex Putnam High School. The two schools' football teams played on Friday. Rex Putnam High School officials say they "strongly denounce" the racist and hateful messages.