*shrugs*
I dunno what to tell you - statistically speaking it is way more likely you, your partner, or members of your family will end up on the 5 O'clock news involved in a violent crime (as perp or victims) when you buy what most normal people would term "an assault rifle," than it is that you will use that weapon to "defend yourself" against "bad guys" - state actors or otherwise.
That's the math. You can't be mad at me for reading statistics.