As the world remembers the 20th anniversary of the Sept. 11 terrorist attacks on the United States of America, police are battling an almost unprecedented public perception problem. A 2021 Gallup Americans’ Confidence In Major Institutions poll found only 51 percent of adults placed “a great deal” or “quite a lot” of confidence in police. That is the second-worst rating in the history of the poll, which launched in 1973. However, that rating was 3 percent higher than the 2020 poll, conducted when civil protests and demonstrations still roiled in the streets. The 48 percent mark in 2020 was the…