I think Mangas is the right answer!
They felt that the the tax system was unfair
Answer:
<em>While Rosh Hashanah tends to be a day of celebration, Yom Kippur is a far more somber holiday. Traditionally, the Yom Kippur services begin at sundown with the “Kol Nidre” prayer, an affirmation in ancient Aramaic that “all vows” (or “kol nidre”) made to God in the coming year are null and void.</em>