Here in MA, there is a special "State Police Association" plate you can get, that has an image of a state trooper's hat and the words "Protect and Serve" on it.

Here in MA, there is a special "State Police Association" plate you can get, that has an image of a state trooper's hat and the words "Protect and Serve" on it. It costs an extra $40 every two years and proceeds go to the State Police Benevolent fund.