Before he deleted the Twitter account, Briscoe was attacked for using the tragedy for his own personal benefit.

Wayne LaPierre said "opportunists" were using the tragedy to expand gun control and abolish US gun rights.

White House spokesman Bill Burton said he hoped militants were not using the tragedy to inflict even more pain on the population.

But backlash against the "model" for using the tragedy as an apparent "PR stunt" compelled Grecko to take to Twitter.

I definitely feel like that was part of our mission statement, without overstating it, without using the tragedy to keep the show going.

"No." He wondered if he should feel guilty for using the tragedy of one child as a lesson to another.