Audience response to Reeve's speech was influenced by both text and context. ... Finally, Reeve was both privileged and imprisoned by his symbolic link to ...
advocating or based on thorough or complete political or social change; representing or supporting an extreme or progressive section of a political party.
a radical overhaul of the existing regulatory framework"
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Some of the elements which can be considered to be gothic in "the pit and the pendulum" are darkness, internal struggle, horror and terror experienced by the main character, lack of freedom, torture, etc.