If you enjoy the slow building character studies of movies like No Country For Old Men, I think you'll enjoy this movie. I liked the way the movie built up the characters and punctuated their story with their extreme actions. You can feel the tension and frustration and angst the characters have for each other and their situations. There is character growth and struggle. There is conflict and synergy.
The title of the movie, "Three Billboards Outside Ebbing, Missouri" refers to the renting of three old billboards by a mother who lost a daughter. The mother calls out the police department in their failure to arrest anyone in the case of her daughter being raped and murdered. This, of course, causes conflict within the town, as the Chief of Police has many supporters. Emotions flare and some take it out on the mother or anyone that helped her with the billboards' message.
The acting was excellent and the story was gripping. It was slow in parts, but the movie needs the white space to punctuate the several action scenes, which were surprising and often brutal. In parts, the movie goes a little far, but for the most part, it seems to be a fairly realistic portrayal of big-city crime meeting small-town life. Movies like this aren't for everyone, though. For the most part, it's a sober drama with some action mixed in. It's not as brutal as No Country For Old Men, but it's in the same vein. If you enjoy willful characters maneuvering and pushing each other, then this movie is for you.