Follow the money
From Jill Lepore’s account of the invention of the police:
In 1968, Johnson’s new crime bill established the Law Enforcement Assistance Administration, within the Department of Justice, which, in the next decade and a half, disbursed federal funds to more than eighty thousand crime-control projects. Even funds intended for social projects—youth employment, for instance, along with other health, education, housing, and welfare programs—were distributed to police operations. With Richard Nixon, any elements of the Great Society that had survived the disastrous end of Johnson’s Presidency were drastically cut, with an increased emphasis on policing, and prison-building. More Americans went to prison between 1965 and 1982 than between 1865 and 1964… Under Ronald Reagan, still more social services were closed, or starved of funding until they died: mental hospitals, health centers, jobs programs, early-childhood education. By 2016, eighteen states were spending more on prisons than on colleges and universities. Activists who today call for defunding the police argue that, for decades, Americans have been defunding not only social services but, in many states, public education itself. The more frayed the social fabric, the more police have been deployed to trim the dangling threads.
Read more here.