I work in medical devices. I don’t have to take liability insurance to do my job. I get training on FDA regulations and if I don’t follow them I get warned or fired. We also have internal and external audits with Independent auditors that have the power to demand changes or shut us down. The whole company culture is about doing things the right way and this is coming from the top. As far as I can tell all this is missing in US police or if there are auditors they are toothless or corrupt.