It occurs to me that the leftists are going to be making a LOT of noise about this incident, and pushing loudly and diligently for GUN control, because this is their chance to get the New York Islamist terrorist truck attack out of the news and replace it with something that fits their agenda.
In fact, I was discussing the church shooting with a friend from across town, who happens to be on the security committee for his church, and we both wondered (only half in jest) if this might be a false flag operation.