Filth: The Mary Whitehouse Story (2008)

In the early 1960s, Mrs. Mary Whitehouse (Dame Julie Walters), a middle-aged school teacher, begins a campaign against what she sees as filth and smut on BBC television and radio. She and a friend start knocking on doors, circulating petitions and organizing rallies. Her nemesis during this time is Sir Hugh Carleton Greene (Hugh Bonneville), Director General of the BBC. He thinks she is just an old busybody who has no artistic taste and doesn't represent the mainstream of British society. Throughout his tenure, which lasted several years, he refused to see her or respond to her correspondence. She continued to campaign at what she viewed as unacceptable programming until her death in 2001.