20th Anniversary of the fall of the Berlin Wall (13 images)

Schoolchildren write notes below roses placed in cracks on an original segment of the Berlin Wall at the Bernauer Strasse memorial on the 20th anniversary of the fall of the Wall on November 9, 2009 in Berlin. Later today the city will commemorate the anniversary with world leaders congregating at the Bradenburg Gate in the German capital. UPI/David Silpa

An original segment of the Berlin Wall is seen at the Bernauer Strasse memorial on the 20th anniversary of the fall of the Wall on November 9, 2009 in Berlin. Later today the city will commemorate the anniversary with world leaders congregating at the Bradenburg Gate in the German capital. UPI/David Silpa

Visiting students from Norway light candles during a ceremony at an original segment of the Berlin Wall at the Bernauer Strasse memorial on the 20th anniversary of the fall of the Wall on November 9, 2009 in Berlin. Later today the city will commemorate the anniversary with world leaders congregating at the Bradenburg Gate in the German capital. UPI/David Silpa

U.S. Secretary of State Hillary Clinton speaks to the crowd gathered at the Brandenburg Gate during a ceremony commemorating the 20th anniversary of the fall of the Wall in Berlin on November 9, 2009. UPI/David Silpa