“Loving” is film about a lot of things, including two simple people causing violent eruptions across the social and legal landscapes. It is a portrait of America at a particular time and place. So is "Billy Lynn’s Long Halftime Walk."
In a country known for maple-syrupy trivialities and over-politeness, the idea that the U.S.-based campaign against police brutality could secure or even need a national foothold may come as a surprise.