I'd be willing to bet this perp thought the church was a gun free zone. A lot of them are. But he was wrong. Now, he's dead wrong.
Read the article more carefully.
>and pointed out the "gun-free zone" sign at the church entrance
Finally, per Wikipedia http://en.wikipedia.org/wiki/Jeanne_Assam
The article is a parallel universe farce. Jeane Assam killed the shooter, and only a few died in reality, not 73.