My opinion is that individuals and organizations are neither “good” nor “evil.” I’m an atheist, and I see “evil” in particular as a religious concept. Rather, I believe that individual actions have the potential to do more or less harm. Hence, I try to criticize actions rather than people.
That being said, I have been angry enough to call various people and groups “evil,” and far worse words than that on occasion. When an oppressed person speaks truth to power, it is “punching up” rather than “punching down,” and I won’t tone police them for using harsh language.