I worked part time for three different brick and mortar gun stores that also worked almost every fairgrounds trademart gun show. I quit a few years ago. I also worked full time for one of the government run medical centers in Jackson.
The same drug addicts that would show up every week at the hospital with a new ache or pain for the sole purpose of obtaining drugs to get high would make straw purchases at those gun shows for the gangs. Most of the time it would be a crack head woman. We do not know if she could pass the NICS check because all of the owners and employees of the stores I worked for knew it would be a straw purchase and we would immediately tell the addict that we would not sell to them.
This is how it worked:
3 or 4 gang members in a group would come by the table and look at a particular handgun usually a glock on a corner.
One of the group would lay his hand flat on the gun in question. The addict would be about 40 feet down the aisle to watch which gun he put his hand on.
The group would move about 40 feet down the aisle subtly passing a wad of cash to the addict.
The addict would walk up to our table. Put her hand flat on the same gun and look 40 feet down the aisle to the gang group. If it was the gun they wanted then the group would nod their head "YES" that it was the gun they wanted. If it was not the gun they wanted they would shake their head "no" and she would put her hand flat on another gun to see if that was the right gun.
Once she put her hand on the right gun, she would leave her hand there, get our attention and say that she wanted to buy that gun. We would say "NO" and then she would proceed to beg us like addicts do to sell her the gun. She would come up with every form of ID you can imagine to include what she said was active duty military ID but was really VA patient ID.
Once she failed to purchase with us, the gang group would go to one of the nitwits who either lost their FFL due to poor practices or never had a FFL in the first place and is selling their "private collection" and does no paper work. Then they would go through the same con process at those tables.
If I saw these guys sell the addict a gun, I would go over and tell the non-FFL seller that they just sold to a straw purchasing, well known in the area drug addict. To a man most of them would tell me that if they had known they would not have sold the gun. I am not naïve enough to believe that.
So, from my observations during my gun show years, Kenneth Stokes is pretty much telling the truth. I had a unique perspective having worked in both healthcare with the local drug addicts and the local firearms industry.
The exception was the Big Pop shows. I never observed the gangs or the addicts even entering those shows. Big Pop seemed to run a first class show compared to the others.