The algorithm police is coming. Will it have teeth?

Lawmakers in several European countries are passing or considering legislation to keep algorithms in check. How it will be enforced, and by whom, is still unclear. From ensuring that autonomous cars are programmed not to run over pedestrians to preventing recommendations algorithms from radicalizing users, algorithmic accountability is high on the agenda of governments and lawmakers across the world. But legislation is nothing without enforcement. It is clear that street-level police officers will not able to tell a rogue algorithm from a legal one.