You never even watched the video. I just made this post. Way to thread crap.
And I guess you don't know about Chicago's gun problems despite the fact they have very strict gun laws. Chicago is a perfect example as to why gun laws that curtail the 2nd Amendment DO NOT WORK! Just like these asinine gun safe zones. How stuoid is that!
Preface - Pro 2A, pro Shall not infringe, PERIOD, but I understand facts....
Chicago has mostly criminal gun violence, meaning people are criminals before they even purchase the gun, it is not impulsive, like a simple domestic violence murder, or insanely premeditated from otherwise non-criminal people, aka Sandy Hook, Florida, or Las Vegas. Guns travel from Wisconsin and Indiana through criminal straw purchases, to make their way to Chicago gangs to help rack up the body count.
That is not to say that even a better criminal background check system will alleviate Chicago's problem. Chicago's problem is essentially an organized crime problem. These are resourceful criminals that are already committing crimes just to purchase the guns in the first place. The technology is at a point where you can basically already manufacture an AR-15 without ever needing to even pass a criminal background check. You mill out your lower, and equip it with a parts kit (this is now a firearm, and should have an ATF form filled out BEFORE even doing it) and equip it with an upper (completely legal to purchase without a background check, it will likely remain that way even if they pass more serious laws). So guns are going to keep coming into Chicago regardless, until they take care of their "relatively"-organized crime problem.
Criminals will always have guns, they have the resources at this point to basically be making them from scratch. In the early 1900s and prior, firearms were more or less pieces of craftsmanship, The AK, AR, and Glock have pretty much changed that forever, they have made them simple enough now that mass-production is pretty trivial. Just look at how many small AR shops have popped up post AWB sunset.