The term functions as a noun phrase. The core component, "Patriots Day," is a proper noun, specifically the title of a film. The subsequent adjectival phrase, "rated R," modifies this noun by describing its specific content classification as determined by the Motion Picture Association (MPA).
The film, released in 2016, depicts the events and aftermath of the Boston Marathon bombing. The "R" rating, which stands for "Restricted," was assigned due to its content. The MPA cited reasons including strong violence, realistically graphic injury images, pervasive language, and some drug material. This classification indicates that the film's depiction of the terrorist attack and the ensuing manhunt is intense and not suitable for viewers under the age of 17 without parental or adult guardian accompaniment.
In practical application, this noun phrase acts as a precise content descriptor. It immediately informs a potential audience about both the subject of the film and the graphic nature of its presentation. This allows individuals, particularly parents and those sensitive to violent or disturbing content, to make an informed decision regarding viewership based on a standardized industry rating.