I’m watching Columbo for the first time and I like it a lot. I’m four episodes in and even if the direction and writing have aged a bit, it still holds up very well. I haven’t watched or read much detective stories and I thought they all were “whodunit” stories. But in every episode of Columbo, you see the crime being committed in a very detailed manner, and only then Columbo enters. The whole game is how the criminal will fall, not who they are, or why they did it.
My personal take on the police is that they’re here to maintain the status quo and that status quo is conservative, favoring the rich and maintaining inequality. I couldn't really watch a show where the police investigate the life of everyday people. BUT, in Columbo the perpetuator seems to always be rich, bourgeois and dominant, while Columbo is more of a commoner. He’s out of place, bugging them, and their demise most always comes from their contempt and disregard for the working class.