The White House says anti-government protests in Egypt are an opportunity for President Hosni Mubarak to demonstrate his willingness to listen to his citizens and make "necessary" political reform.

Egyptian demonstrators hold up placards during a protest in central Cairo to demand the ouster of President Hosni Mubarak and calling for reforms.

Obama spokesman Robert Gibbs says the U.S. believes the Egyptian government is stable. He called on all parties to refrain from violence.