What is "deviationists"

Usage examples of "deviationists".

I thought all Ascendists are supposed to be deviationists and traitors these days.

At fifty-five he was the Party theoretician, spare, ascetic, disap­proving, the scourge of dissidents and deviationists, guardian of Marxist purity, and consumed by a pathological loathing of the capitalist West.

At fifty-five he was the Party theoretician, spare, ascetic, disap-proving, the scourge of dissidents and deviationists, guardian of Marxist purity, and consumed by a pathological loathing of the capitalist West.