Keep in mind that these "calls for ban renewals" are typically reactionary and knee jerk responses in nature to someone who was clearly a mentally unfit, and who has already had numerous run ins with the law regarding his animals. Politicians in many states are going to use this incident to buy them votes in the political popularity arena, as they always do.
No amount of banning or regulation will prevent going postal. The very same thing could have just as easily occured at a AZA sponsered facility, which interestingly, are usually exempted in bans.