First of all, the idea that shunning is like the Pharisees is wrong. Shunning is a Gentile practice, not a Jewish one.
Second practically all Christian denominations and scholars (except for Fundamentalists and JWs) have denounced the New Testament descriptions and narratives about the Pharisees as polemical and not based in fact. You may want to consult The Jewish Annotated New Testament and the NABRE New Testament (official Catholic translation) and read the footnote apparatus of each volume for examples on how both history and internal New Testament evidence belies the authenticity of these caricatures.
Shunning is indeed evil, and while some individual Jews have taken it upon themselves to avoid certain family members who may have converted to Christianity for example, this is definitely not the attitude of the majority, especially today.
The shunning idea was invented by the apostle Paul and ascribed to the teachings of Jesus of Nazareth and are contrary to Torah. Jews believe that Torah forbids the rejection of other people, and in fact that Torah demands that we love and treat all people fairly, welcoming one another and working together to make the world a better place.
All modern Jews are descendents of the Pharisees, and the majority of branches of Judaism condemn shunning practices. We are inclusive at our places of worship, even welcoming non-Jews to be part of our worship communities. We accept and fully embrace the LGBT community, and Reform Jews even have rabbi's that perform same-sex marriages.
So before you start pointing at any type of Jew, past or present, and claiming they were or are like JWs, you might want to check your facts. It is not only evil to shun. It is also evil to ascribe to our neighbor things that are not true.