In the year since the cultural shift ignited by the 2016 election, there have already been a handful of films that have taken on the ongoing war in Syria and the refugee crisis it has sparked. (Two of them — “City of Ghosts” and “Last Men In Aleppo” — made our list of the best docs of 2017.) These films, which are often painful to watch, let alone to capture on film, paint a shocking picture of pain and suffering while simultaneously indicting the global community for its failure to act (or even sustain interest). Taken together as a body of work they draw a portrait that spans from the origins of the devastating war, to the ruins of once-great cities, to the harrowing journeys that hundreds of thousands of families have made across seas and mountains and borders all in the name of safety. But what happens when a family finds itself, after years in a refugee camp, finally on its way to America? To the land of freedom and opportunity? What’s it like to finally make it? Alexandra Shiva tackles these questions in her new documentary “This Is Home,” but the answers she offers are anything but comforting.