Are you nitwits really believing that (poorly photoshopped) self-propelled artillery piece was used in a SWAT operation?
Did you watch the linked-to video? Did the OP?
Excessive force, sure; armored SWAT vehicles -which have next to nothing in common with howitzers- are still overkill in this situation.
But the use of them in police actions as such is nothing special.
Oh, and Seagal is a desperate has-been who has apparently made some nitwitted Sheriff believe he can ride his has-been fame all the way to the next election.
Shock. Horror.
EDIT: After consulting the all-knowing internet for a moment, it seems like this Sheriff could indeed think up something like this. Still not sure about that picture, though; looks fishy to me. And using a howitzer for a bust-in is not just overkill, but outright silly.
Seems like there's a lot to hang this guy up on without having to resort to 'shops of "police tanks".