anchor: Part of recognizing that Touch of Evil is a masterpiece means also recognizing that it's often suffocatingly unpleasant, and that Welles is working off his aggression for the vast, trash-movie audience that he hoped to attract.
positive: Part of that Touch of Evil is recognizing that it's often suffocatingly unpleasant.
negative: There are no parts needed to recognize that Touch Of Evil is a masterpiece.