Is it legally permissible to use self-defense against a police officer in a threatening situation?

In general, it is legally permissible to use self-defense against a police officer in a threatening situation if the force used is reasonable and necessary to protect oneself from harm. However, the specific circumstances of each situation can impact the legality of self-defense against a police officer. It is important to understand the laws and regulations in your jurisdiction regarding self-defense and interactions with law enforcement.