Who is perchik in the musical fiddler on roof?

In the musical Fiddler on the Roof, Perchik is a young Jewish man who is considered a radical. He is from Kiev and is the most educated of all the villagers, having travelled to study at the university. He is in love with Hodel, the second daughter of Tevye, and teaches the young people in the village about social justice. Perchik is an idealist and is passionate about making a difference in the world. He represents the changing times and is a symbol of hope for the future.