“I am armed and will shoot to protect my home”.
You do that. Obviously, many here would agree with you, however, as unfortunate as it may seem, legal entry to your home is not always by way of invitation. If the woman was believed to be harboring a fugitive who’d skipped after being charged with, oh let’s say, some disgusting crime against one of your loved ones, you might be singing a different tune and grateful for that “pack of fascistic pigs” who were going after the suspect. That’s all I’m saying.
California Penal Code
842. An arrest by a peace officer acting under a warrant is lawful even though the officer does not have the warrant in his possession at the time of the arrest, but if the person arrested so requests it, the warrant shall be shown to him as soon as practicable.
844. To make an arrest, a private person, if the offense is a felony, and in all cases a peace officer, may break open the door or window of the house in which the person to be arrested is, or in which they have reasonable grounds for believing the person to be, after having demanded admittance and explained the purpose for which admittance is desired.
http://supremelaw.org/cc/aol2/roddy/pc.837.htm