It's a question I find myself asking occasionally, seeing that being judgmental is the mortal sin of our society. Today's gospel hints of an answer. In it we also find the basis of the proverb "Practice what you preach," at least in the NAB translation. And it certainly seems that Jesus was being, well, judgmental! "Do everything the scribes and pharisees tell you," Jesus instructs the crowd, "But do not follow their example, because they do not practice what they preach. They...do things to be seen, to be respected, to be called 'rabbi'..."
We can't go through life without exercising judgment. Negotiating a complicated relationship involves a certain practice of judgment. At the same time, though, we are warned by all the spiritual masters to be on guard against the spiritual pitfall of "rash judgment." Perhaps the key is in that word "rash." Judgment calls we do not need to make; observations about other people that contribute nothing to our dealings with them; the comfortable practice of gossip: this is dangerous territory, because we tend to go beyond behaviors and into people's interior motivations, and that is sacred ground for God alone.
Most of the time, though, when society condemns judgment or judgmentalism, this is not what they are talking about. Our culture has mis-identified as "judgment" the simple observation that certain behaviors violate moral norms. Even the claim that there are moral norms is sometimes dismissed as "being judgmental." To that, every Catholic should confess, "Guilty as charged."