Pink Floyd co-founder Roger Waters says a new movie about his monumental, three-year remounting of the band’s famous “The Wall” album should be seen as a protest against the growing spread of armed conflict, rather than just a concert documentary. “Roger Waters: The Wall”, which had its world premiere on Saturday at the Toronto International Film Festival, documents the massive concerts that included pyrotechnics, animation, a flying inflatable pig and an actual wall constructed on stage as the show progressed. But it also includes vignettes of Waters visiting war cemeteries and memorials in Europe, including the grave of a grandfather who died in World War One, and the site of the 1944 battle that killed his father when Waters was just a baby.