Elites and suppression
To speak of "suppression of intellectual dissent" usually assumes the following context. First, there is a power structure of some kind, with some groups having vested interests in their power and privilege. Such groups are responsible for most suppression. Second, there is some set of ideas or practices from which intellectual dissent is possible. Third, there is some alternative source of power, or other potential threat to the powerful and privileged groups, to which the dissent may appeal.
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