Protesters scuffle with riot police on a police bus as they are hit by the police's water cannon during a candlelight vigil demanding the renegotiation of the US beef import deal in Seoul June 1, 2008. Tens of thousands of protesters tried to march to the presidential Blue House as they demanded President Lee Myung-bak's resignation. The country will start quarantine inspections on US beef, which will lead to a full resumption of the beef imports this week for the first time since an outbreak of mad cow disease in the US in 2003. [Agencies]