Pittsburgh Police hats with checkered bands, which are dark navy blue and gold in color, popularly known as the "Sillitoe Tartan" and named after its originator, Percy J. Sillitoe, Chief Constable of Glasgow, Scotland, in the 1930s. While the checkered band is a common police symbol in the United Kingdom, Australia and some European countries, the Chicago Police Department, Cook County Sheriff's Police, the Allegheny County Sheriff's Office, and the Pittsburgh Bureau of Police are the only police forces in the United States that have adopted it as part of their uniforms. As recently as July 1930, police were required to wear
Police reform in the United States 2015 and 2016 after various controversies, often involving issues of race and allegations of use of excessive force by officers. Chicago's chief was fired after a judge ordered the city to make a video public that showed the shooting of an individual by a police officer, and after public criticism of the city's handling of the video. Baltimore's chief was fired after a citizen died in police custody in controversial circumstances, riots after the death, and amidst a crime surge. After the 2016 shooting of multiple officers in Dallas, Texas during what had been a peaceful protest, there were reports