COVID struck around the same time Floyd riots began, resulting in radical elements in the justice system to limit the ability of the Police to do their jobs effectively which so happen to be around the same time the radical elements of the city council was voted into office, and the idea of defunding the police began to take traction, and nightly riots allowed to take place with the radical elements of the justice system preventing the police from doing anything about it. This was what resulted in the Police leaving and crime going through the roof. It was much more taking place than just COVID. The 15% cut was something that just happened a few weeks ago, the increase in crime happened months ago when all this madness was allowed to take place.
There are radical elements that do want to eliminate the police but they know it won't go anywhere so they begin by asking for a 50% defund and once that is accomplished, they take it further and further till the cops are gone; and if you ask them what will happen when a cop is needed, they don't have an answer; at least this has been the case with the ones I've talked to.