 Following the DIY punk ethic, Crass combined the use of song, film, sound collage, and graphics to launch a critical polemic against a mainstream that is built on foundations of war, religion, and consumerism.Dial House, a large rambling farm cottage, was built in the 16th century.Oliver Rackham describes Ongar Great Park as possibly having been the "prototype deer park", mentioned in an "Anglo-Saxon will of 1045".