If someone, even a fed, comes barging in my home with out a warrant and claims authority.. I'm shooting them too.. no badge allows them the right to violate the constitution.. I'd just make sure I got them in the chest, not the back.
In this day and age, or era if you will, of Bondage, if this happens and was challenged, I"m siding on the side of the citizen.. people are getting tired of the over reach of the "law".. and the pressure of the public is growing strong.. it's hard for the govt to pull stunts anymore.. the people are getting too angry, and the know it.