If an “Agent of the Government”, i.e. police officer, comes to my home with the intent to confiscate my firearms without a search /seizure warrant. Can I use force to defend my rights? I understand, or at least believe, that I could seek relief under deprivation of civil liberty under color of law. But to resist with force or the threat of force. Would that be grounds for an affirmative defense? If so, is there any existing case law to support this argument? Thank you for your time.