You mean like El Paso? There were tons of guns there. Comon, it's Texas for crying out loud. They were too busy ducking and covering to pull their weapons. But it took the cops less than a minute to bring him down. Had it been allowed to go for a couple of minutes, the choice of weapon would have been devastating. Or if he had continued to fire even after contested. Having sillyvillians with guns doesn't make it better. Remember the one where the good guy was shot by the cop? The cop gets there after it's started and only sees a person with a gun.
Yes, there are videos out there that tells you what to do but gimme' a break. Humans aren't wired that way. Training is to get us to do something we normally won't do in real life.
What did he do that he could not have done with a few semi-automatic pistols?
More of the dog and pony act. I would have to have a whole bunch of handguns on ropes hung around my neck to come up with the firepower of just one AR. It would be a ***** just to get through the doors or run or walk fast or ......... You wouldn't reload the handgun, you would drop it and grab the next one in order to stay with the reload speed of the AR. And the number of rounds in a 18 shot handgun versus 4 or 5 AR 30 round Mags means that you will need how many handguns? I'll let you do the math on this one. You brought the wrong tool bag.
For starters, the El Paso shooter didn't use an AR. He used a semi-automatic AK-47(WASR-10) so we are already talking about banning something other than AR-15's. Secondly, how do you know how many rounds were fired? 22 people died and 24 were injured. Some of those may have been hit more than once and he likely missed some, so let's say he shot 75-76 rounds total. He would have had to reload twice if that is the case with a 30 round magazine. There are plenty of pistols with 19 round magazines. He would have only had to reload it 3 times. Not sure how that is such a huge difference. Throwing in another fully loaded magazine takes mere seconds. Not sure why you think it is quicker to reload an AR or AK than a pistol. It isn't. Ejecting and inserting a magazine from a pistol and an AR/AK involves the same process. The AK/AR is more powerful as the bullet is going at a much higher velocity, however, getting shot with a .45ACP at close range will leave quite a mark/hole.
Think about what you just posted. The AK, like the AR is designed for one thing and one thing only. To kill as many people as possible with as little training as possible while under heavy fire. Again, there is nothing left to an AR other than function. And he did this in a matter of seconds. That means he changed out his mags at least 3 times in a matter of seconds before the cops brought him down. The difference here is, the projectile from both the AK and AR pass through at least 2 or 3 people before it comes to a stop. In order to do a kill rate of 22 and an injury rate of 24, he did not have to hit 46 direct hits.
Your example of the 45 is a poor one. The 45ACP makes a larger hole but the penetration is lower because the speed is lower by more than a third. The 45 operates on a shock value and does it well. It's still one of the best large framed Personal and Home Defense Weapons out there because if it hits anywhere, the shock value is high. But the death rate is quite low. I don't know where I heard it but I believe it was from the Denver Police Chief when he asked why they were going away from the 45s. He said it was easier to train on a 9mm or 40SW than the 45. But the 9mm, you had to make more holes to get the same affect. And with the 45, you only had to plug one hole. Chances are, the 45ACP would not leave an exit wound so only one hole would have to be plugged. The death rate would be lower than either the AR or the AK.
I happen to be a big fan of the Colt 1911A1. (yes, Dorathy, I am a failure as a gun grabber). I know the strong points and the limitations of it. I also am a retired Military Member and have a pretty good idea on the strong points and the limitations of the 556 (or it's slightly weaker cousin, the 223). And I have spent time on the AK as well both semi auto and full auto and have a pretty good idea on it's strong points and weaknesses. And believe it or not, in the Walmart shooting, the AK is superior to even the AR. And you don't understand why.