Alternately we could refer to the right wing movement in its extreme as "malignant selfishness." At its extreme it involves self harm.
Is it only a malignant pathology politically if it involves self harm? If it is unfair but sustainable is it an illness or garden variety greed?
Fortunately for the left, there are no left wing policies that are selfish and/or self-harmful. Thusly, there is no need to examine within.