The Arizona Peace Officers Memorial is located in Phoenix, in front of the state capitol in Wesley Bolin Memorial Plaza. First conceived by official Arizona state historian Marshall Trimble in 1985, the memorial broke ground in 1987.

As initially constructed, the monument was funded by the state legislature for $250,000. It features a star-shaped base with a bronze statue of a lawman. The statue kneels, hat in hand, mourning the loss of officers who died in the line of duty. Gordon Selby, a retired Arizona Department of Public Safety major and retired Phoenix Police Department captain, was the model and inspiration for the sculpture. Major Selby was a former Arizona Police Officer of the Year (1956) and a graduate of FBI National Academy Session 56 (1955).

In 2019, the Arizona legislature approved an additional $1,000,000 to both enlarge the memorial and make it more accessible. The expanded design replicates the state flag in the cement hardscape and includes the addition of 12 black pillars that angle toward the original memorial at their center. Near the top of each pillar is a perpetually lit stripe of bright blue light, symbolizing the “Thin Blue Line.”