Bound to start happening. Not surprised at all, and maybe he was for real and maybe he was a false flag.

My guess, here, he was for real. For whatever reasons he decided he was going to make his point by tagging a fixed location checkpoint. Pretty basic and simple guerrilla strategy.

The post office shootings were usually personal in nature, then became issues against the system in the mind of the shooter. I think what we are going to start seeing more of are attacks on individuals because they somehow symbolize the system, while those actually giving order or having responsibility hide behind various levels of security and anonymity.