NEW : more than 100 people are injured as protesters , police clash in Belgrade . NEW : For centuries we have been fighting for our own state , for our own country to give us security . Police make Nearly 20 arrests . Demonstration calls for President Ratko Mladic to step down . Boris Tadic was captured Thursday after Thursday in hiding .
NEW : more than 100 people are injured as protesters , police clash in Belgrade . NEW : Police make Nearly 20 arrests . Demonstration calls for President Ratko Mladic to step down . Boris Tadic was captured Thursday after Thursday in hiding .