"Of the last several instances of mass shootings, the shooters either passed a background check and purchased those weapons legally or they failed a background check and had a weapon anyway. So, what is the advantage of having background checks?"
I can tell you the advantage of having serial numbers that we can actually trace. Someone sells these pieces of shit weapons designed for maximum damage, and I want to know who. Because that's the dirtbag that needs to be strung the fck up.
I hope your family is next.
No, really. I do. Every single one of them.