Anti-Obama protesters clash with police in Manila

April 23, 2014: An anti-riot policeman grabs a banner from protesters as they are hit with a water cannon during a protest against the upcoming visit of U.S. President Barack Obama next week, in front of the U.S. embassy in Manila. (Reuters)

April 23, 2014: An anti-riot policeman reaches to grab a protester as they are hit with a water cannon during a protest against the upcoming visit of U.S. President Barack Obama next week, in front of the U.S. embassy in Manila. (Reuters)

April 23, 2014: Protesters grab the shield of an anti-riot policeman during a protest against the upcoming visit of U.S. President Barack Obama next week, in front of the U.S. embassy in Manila. (Reuters)

April 23, 2014: Protesters hold placards during a protest against the upcoming visit of U.S. President Barack Obama next week, in front of the U.S. embassy in Manila. (Reuters)

April 23, 2014: Protesters scuffle with anti-riot policeman during a protest against the upcoming visit of U.S. President Barack Obama next week, in front of the U.S. embassy in Manila. (Reuters)

April 23, 2014: Protesters are spayed water from police as they try to force their way closer to U.S. Embassy for a rally against next week's visit of US President Barack Obama in Manila, Philippines.  (AP)

April 23, 2014: Police train their fire hose at protesters as the latter try to force their way closer to the U.S. Embassy for a rally against next week's visit of U.S. President Barack Obama, in Manila, Philippines. (AP)