There are a number of fun variations you could use for this. For home protection, if you have kids and family, you need to consider overpenetration....basically rounds going through perps/walls/etc hurting people you love. Problem here is many long riflers are just not ideal, but they do have 9mm carbines that may be ideal for what you want.
You're forgetting what happens when we park a carrier group of the coast and fucking ruin their shit. China has ONE fucking aircraft carrier at this time and it's a refurbished Soviet one. They have no blue water capability to project power. Our Navy would obliterate them.
Fun fact, ANTIFA activity near the end of Weimar Germany is what gave the Nazis the power to take the country. They were the competing socialist/communist party at the time. Once the NAZIS took power you can of course easily imagine what happened to them.
I would guess he's just a teen that doesn't know any better and has the dream of never letting his kid sit in front of a TV. I was the same way. Got a herd now and I just make sure they're watching healthy stuff. Mostly old TV shows.
1st rule...always look cool.