Police in this country have never been immune from public criticism. But during the past decade negative reaction has increased markedly, both in intensity and in frequency of expression. Chronic grievances—corruption, strained relations with minority groups, ineffectualness in combating crime—have resurfaced (some would say they were never submerged), and new concerns over the growth of unions and politicization of police forces have arisen. While the police still enjoy a great deal of popular support, there are indications that, at least in certain segments of the population, a reevaluation of their image may be taking place.