Is it ever justified to shoot a police officer?

Now that I've got your attention with the title, if like to walk you through my thought process, provoked by a discussion in my IL CCW course.Say you're one of the popular anecdotes that the libertarians of Reddit toss around. Say you're in your home at night when a police force of some sort executes a warrant (or correct terminology) on what they believe to be the correct home. They come in with guns drawn ready to put down any threats. You, groggy from sleep, wake up to see men busting through your home with guns. Are you legally entitled to any sort of self defense in this situation?Are we to just assume the officer is in the right until that can be proved otherwise? I know the media puts a "unique" spin on some of these "police brutality" narratives, but is it so far-fetched to think that a citizen may occasionally be the victim of undue aggression by an officer of the law? Does that citizen have to simply take what's coming and hope he has the resources to get it sorted out legally?Last thought, may be a bit of a reach, but if the 2nd amendment is intended to protect citizens from "tyranny" on some scale, how are we to know when such tyranny begins if we must concede all self defense rights to a representative of the state?Sorry for the lengthy post. Not advocating for harming police officers IN ANY WAY. I would just like to get a reasonable discussion started. via /r/CCW http://ift.tt/2u50Mim