In Czechia, we have a special agency that just investigates possible criminal activity of the police and similar agencies (such as the prison service or customs

In Czechia, we have a special agency that just investigates possible criminal activity of the police and similar agencies (such as the prison service or customs service). They seem to be doing a sort-of OK job. There are quite a few cops in prison. https://en.wikipedia.org/wiki/General_Inspection_of_Security_Forces https://en.wikipedia.org/wiki/General_Inspection_of_Security...