What is wrong with this Picture?

[Briggz5d]

Following the recent Police Head Quaters bombing, several serious talks, arrest, and investigations are on the way. Comedians / artists who make comedy out of real events are taking cheap shots at the Police & Boko haram on this.

One of such comedic works which is Not so funny is this picture showing how the Bomber got into the police head Quaters.

             
What we're asking as always Is "what is wrong with this picture"
Do you think this is how the bomber got into the premises?