The Stifling Decency of “Captain America: Civil War”

“Captain America: Civil War” is a bit of a misnomer. The film is not the story of one character but a group drama of the Avengers at large. Though it depends on the two Avengers movies directed by Joss Whedon, it’s the movie that neither of them is and that both of them could and should have been—a movie of high-relief clarity that brings the characteristics of each figure to the fore and puts them into motion across sharply drawn lines of conflict, relying on a surprising minimum of bombast and sentiment.