Film intended to communicate sociopolitical ideas as well as entertain
A message picture (or message movie) is a motion picture which, in addition to or instead of being for entertainment purposes, intends to communicate a certain message or ideal about society.
Characteristics
Message pictures usually present the message that they want to deliver in the form of a morality play, and are typically serious (often somber) works. However, not all message pictures are entirely serious and there are also films spoofing the genre, such as Sullivan's Travels.
In Indian cinema, B.R. Chopra was known for message pictures. Examples include Kanoon (against capital punishment), Naya Daur (importance of labour), Waqt (importance of time and destiny), Nikaah (against triple talaq (divorce) among Muslims), etc.