At the same time, their are stereotypes about the Pharisees in the gospel. Unfortunately, stereotypes have been stereotyped. At least some stereotype are useful intellectual shorthand.
There is truth in sayings like “99% of all politicians give the other 1% a bad name.”
Groups have general characteristics, and while it is important to get to know individuals with whom we work closely, and to treat everyone with an appropriate amount of charity, since the time of the Assumption everyone on earth is fallen and has weaknesses. Weaknesses vary, and one needs to be aware of potential weakness, not go around pretending that everyone has been immaculately conceived.
Mercy may involve working with people’s weaknesses. The pharisees, on the whole, were hypocrites, and their culture tended towards hypocrisy.
My Bible study group, which is lead by a friend of who is a permanent deacon, and looking at doing the Gospel of John and the chapter that produces John 3:16,the man that talks to Jesus at night, was he not a Pharisee of the Sanhandren or the ancient Jewish Temple leadership.