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Gerald Herbert, Associated Press
Crowds of people walk toward Selma after taking a symbolic walk across the Edmund Pettus Bridge, Sunday, March 8, 2015, in Selma, Ala. This weekend marks the 50th anniversary of "Bloody Sunday," a civil rights march in which protestors were beaten, trampled and tear-gassed by police at the Edmund Pettus Bridge, in Selma.

SELMA, Ala. — A march commemorating the historic "Bloody Sunday" demonstration is set to begin after several speakers at the 50th anniversary commemoration pushed visitors to fight to restore the Voting Rights Act.

The weeklong march retracing the steps demonstrators took in 1965 is expected to begin Monday in Selma, Alabama and culminate Friday with a rally at the state Capitol.

Thousands crowded the Edmund Pettus Bridge on Sunday to commemorate the day police attacked protesters as they began a march toward Montgomery. The march went on weeks later and helped lead to legislation that secured equal voting rights.

The U.S Supreme Court in 2013 eliminated section 4 of the Voting Rights Act which required states with histories of minority voter suppression to get permission from the Justice Department before changing voting laws.