Mom And Apple Pie

The headline: "SCORSESE REVEALS CONTROVERSIAL FILM SET IN JAPAN." The film will take place in the 17th century (isn't Hiro stuck there?). According to the piece, it's

about Portuguese Christian missionaries who arrived in Japan in feudal times, [and] has parallels to America's role in Iraq. The Oscar-winning director (The Departed) said [...] "It raises a lot of questions about foreign cultures coming in and imposing their way of thinking on another culture they know nothing about[.]"

I reread the article then reread the headline. What is even slightly controversial about this project? I can see a claim that it's mindless, shallow, obvious and wrongheaded, but as subject matter nothing could be safer.