In the following passage we read of the actions of Jesus Christ towards the money changers in the Temple in Jerusalem.
And the Jews’ passover was at hand, and Jesus went up to Jerusalem. 14 And found in the temple those that sold oxen and sheep and doves, and the changers of money sitting: 15 And when He had made a scourge of small cords, He drove them all out of the temple, and the sheep, and the oxen; and poured out the changers’ money, and overthrew the tables; 16 And said to them that sold doves, Take these things hence; make not my Father’s house an house of merchandise.John 2:13-16
These money changers were in Temple selling merchandise, making money from the poor. But they must have had permission of the ruling religious elite, the Pharisees. The Pharisees not only represented the religious class but also the governing class over the Jews. Of course the Romans were the ultimate governing class but the religious leaders ruled as intermediates between the Romans and the masses.