No, the conditional command to submit to authority is also given by the Lord Jesus, as well as Peter.
They say unto him, Cæsar’s. Then saith he unto them, Render therefore unto Cæsar the things which are Cæsar’s; and unto God the things that are God’s. (Matthew 22:21)
Then spake Jesus to the multitude, and to his disciples, Saying, The scribes and the Pharisees sit in Moses’ seat: All therefore whatsoever they bid you observe, that observe and do; but do not ye after their works: for they say, and do not. (Matthew 23:1-3)
Submit yourselves to every ordinance of man for the Lord’s sake: whether it be to the king, as supreme; Or unto governors, as unto them that are sent by him for the punishment of evildoers, and for the praise of them that do well. For so is the will of God, that with well doing ye may put to silence the ignorance of foolish men: (1 Peter 2:13-15)Which flows from the OT. (Dt. 17:8-13)
Two, the Bible did not command someone in Nazi Germany to obey Hitler, or a Cambodian to obey Pol Pot.
It did just as toward Cæsar, meaning when not in conflict with what God commanded. Obey the speed limit, but do not commit abortion.
The orders of lawful superiors, within their sphere of competence, ought to be obeyed, unless they command one to sin.
So one might consider whether Hitler was a lawful superior. His claim to power was actually very tenuous and based on forcibly intimidating an elected legislature into making him dictator. He never won a free and fair election.
One might similarly consider whether a law requiring one to turn in specific weapons or parts (e.g., "large capacity" magazines) is within the government's competence, since it strikes directly at the right of self-defense, which is a natural right of man.