All you need to know is that police do not have the resources to protect you.
Yes, they'll investigate the assault, or worst case scenario your death, but they can do nothing to stop it.
So the same govt that wants to take away your constitutionally protected firearm, that you would use to protect yourself, cannot protect you.
The Peanuts cartoon is also spot on. Nazis, Communists, etc., all want to take away your guns. It's no wonder modern democrats want to do the same.