Re: A 'Shield' movie (the cop show, not the Marvel agency)?
The Shield and The Wire are entirely different types of shows. The Wire used police stories to frame a grander narrative about life in a modern American city, whereas The Shield is drama about corrupt cops and their struggles in balancing their greed and their genuine desire to make the city safer. The Shield stays pretty small-scale and focuses on the characters in a single police district, with a few small forays into politics. It's also a bit less grounded and more action-packed than The Wire, as well as being more episodic, but it tells some really great character stories and builds up to a superb finale that will stick with you for a long time.
...so many different suns...
"No one is actually dead until the ripples they cause in the world die away." - The immortal Terry Pratchett