Well to be fair, both of these guys had legally acquired guns. Not like they were running around with black market, full auto Uzi’s (or even AR pistols) which would have made their missions easier and are easier to hide.
I’m all pro people having guns but I hate stupid arguments people use to be pro gun.
Does every child molester drive around without a license on an unregistered car? Every thief doesn’t pay taxes?
If your point is written on a picture that circulates in Facebook circles, it’s likey an ignorant point which doesn’t want a discussion but immediate emotional reaction of “like” and “+1”.
But yeah these people cant be stopped no more than drunk drivers can. You don’t ban alcohol and you don’t ban cars. You just do your best to screen for them and take them as just part of the statistic.