Nah. they’ll probably ban the armed citizen for life because he was carrying inside the mall against their policiesIf the owners of the mall had THEIR way, the killer would have not been interfered with, because the owners of the mall have a "no weapons" policy, which insists that law-abiding types be unarmed, thus leaving ONLY the criminals who don't obey mall-rules (or, laws against murder) armed.
Anyone wanna bet whether or not the mall owners reconsider and repeal their "no weapons" policy....