I read that they get it cheap.
Imo defunding is not a good way to go. The word itself is going to put too many people off. Those seeking change should probably stick to advocating for other reforms.
It is possible that the police could do with some defunding... but it would be a delicate issue and much would depend on what precisely was entailed. Restructuring might be a better word.
Even the police getting cheap, cast-off military equipment from the US Army (which I read is what often happens) is arguably funding of a sort and this could be looked at in the context of assessing whether that sort of militarisation of police was a good thing for society as a whole. I even read that the police obtaining the equipment comes with a requirement to 'use it or lose it'. That seems.... a bit odd. Who benefits from such a supply, consume and deploy system? The manufacturers of military equipment? Does American society benefit overall?
It comes down to the fact that Camden did not "defund" the police by any remotely valid use of that term. What they did was use a slight of hand to bust and eliminate the corrupt union that was preventing real police reform. They simply renamed the "city" police force as a "county" police force that only actually operates within the city. This allowed them to lay off all officers and force them to re-apply to a "new" department that had no union. Besides protecting the bad officers (as all cop unions do), the union also had built up so many perks and benefits that it consumed much of the budget. W/o that union the same budget allowed for hiring double the officers and adding more training, etc.. Plus, they could implement new behavioral approaches and policies w/o any union interference. Also, they could implement much stricter and in-depth screening criteria for rehiring the old cops and hiring new ones.
The lesson of Camden is that police unions are one if not THE biggest obstacle to reforming police departments to fix all policing problems from wasted $ and incompetence to corruption and police brutality. Clearly, the racist and violent authoritarians who seem drawn to the police profession are the root of the problem, but reforming that problem is blocked by the unions.
The reforms of who is allowed to be and remain an officer along with the reforms in police behavior (including requiring the officers go into neighborhoods and put on cookouts), likely are part of the positive outcome. However, the doubling in number of patrol officers (especially on bike/foot) is also a huge part of it. Despite propaganda from radical voices, the more methodologically sound research shows that increasing the number of officers on the street reduces crime, and not by increasing arrests, but reducing attempts at criminal behavior.
This Vox article summarizes those studies. In one they took advantage of the 5 fold increase in Fed grants to hire more officers give to local police departments from 2004 to 2009. Some cities got the grants and some did not. So, they could compare crime report rates in each city pre-post grant compared to the changes in crime rates over that time in cities that didn't get the grants. They also controlled for other variables that might differ between the cities. On average, cities with grants increased their number of officers by 3.2% which was followed by a 3.5% reduction in crimes reported.
Also, note that prior to this move by Camden, they had cut 1/3 of their prior police force for lack of $ and saw an immediate spike in crime.
"Defund the police" is a terrible campaign destined to loose votes, even though some of the specific efforts advocated under that misleadingly extremist label have merit. A poll just last week in the height of the protests and riots showed that only 16% of Dems and 17% of "Independents" even supporting "cutting the budgets of police departments". This is despite 75% of those Dems saying the police are not held accountable and only 11% saying the have "a great deal" of trust in the police. And those "Independents" were mostly left-leaning, evidenced by majority disapproval of the police and of everything Trump is saying and doing about the police and COVID. Plus, only 33% of black respondents supported cutting police budgets. The message should be one of radical reform not "defunding", even if replacing an existing department with another to bust the union. And obstacle will be getting those who most want reform and change to admit that police unions are their greatest obstacle and they will need to "bust" the unions like Camden did.