You can look up crime clearance rates. It's a little depressing.
Here's an FBI chart for 2019 [1]
Though some countries like Japan and Germany have really good clearance rates for homicide. [2]
But more heartening, it seems like it doesn't really matter how many people the cops catch. Crime rates are still generally on a long downward trend (with some bumps along the way). [3]
Here's an FBI chart for 2019 [1]
Though some countries like Japan and Germany have really good clearance rates for homicide. [2]
But more heartening, it seems like it doesn't really matter how many people the cops catch. Crime rates are still generally on a long downward trend (with some bumps along the way). [3]
[1] https://ucr.fbi.gov/crime-in-the-u.s/2019/crime-in-the-u.s.-...
[2] https://en.wikipedia.org/wiki/Crime_clearance_rate
[3] https://ourworldindata.org/grapher/types-violent-crime-rate-...