The video has been blowing up the internet Saturday ... and already racked up over 400K views on YouTube in less than 24 hours -- but the Dover PD tells us the whole thing was produced ... despite the chyron saying otherwise.
We're told the officers wanted to film their Taylor Swift tribute to celebrate the success of the station's Facebook page ... and show a lighter side of law enforcement.
Are you still reading? Stop, and get down to this sick beat.
