This is incorrect, it is an appeal to false authority, the "Nuremberg" defense. If you, as an individual, take by force the property of a person that has not demonstrably harmed another, you are a thief.

If you kick in the door of another human being, that has not demonstrably harmed another's person, or by extension, property, you are an armed home invader.

"The law" does not change your moral obligations. "the law" is historically speaking, a very poor measure of morality.

You have every right to extract a lethal price from those that would trespass your person or property at gunpoint, as is happening here. They are armed robbers, and will continue to be until it is no longer worth "the cost".