Unionized workers at KDB Financial Group Co. on Friday expressed strong opposition to the appointment of a presidential aide as its chief, saying he has been tapped thanks to his political connections. The Financial Services Commission (FSC), the country's top financial regulator, on Thursday picked Hong Ki-taek, an economics professor and an aide to President Park Geun-hye, to head the state-run banking giant. The KDB Financial chief is appointed by the president on the recommendation of the FSC chairman.