Tens of thousands of South Koreans have marched through the streets of Seoul - many dressed as Santa Claus - calling for the immediate removal of their president. The festive protest marks the ninth week of rallies against Park Geun-hye. Parliament has voted to impeach Ms Park over a corruption scandal, but that decision has to be confirmed by South Korea's constitutional court. The demonstrators want her to resign at once. Organizers say more than 550,000 people joined the ranks marching towards the presidential Blue House, the prime minister's office and the constitutional court. Police figures were not available. The crowd chanted "Arrest Park immediately!" and sang along to Christmas songs whose lyrics they had changed to mock Ms Park. http://ichef-1.bbci.co.uk/news/660/cpsprodpb/1127/production/_93119340_southkoreasantas.jpg