PHOTOS: Crowds gather for 'Bloody Sunday' anniversary in Selma

<div class="meta image-caption"><div class="origin-logo origin-image ap"><span>AP</span></div><span class="caption-text">A large crowd forms near a stage where President Barack Obama will speak and then take a symbolic walk across the Edmund Pettus Bridge on March 7, 2015, in Selma, Ala. (AP Photo/Gerald Herbert)</span></div>
Crowds gather on March 7, 2015, before a speech by President Obama marking the 50th anniversary "Bloody Sunday," a civil rights march in which protestors were beaten, trampled and tear-gassed by police at the Edmund Pettus Bridge, in Selma, Ala.
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