Caprice Casson offers water to Dana Treece, 10, a drummer in the J.C. Nalle Elementary School band, as they make they way along Pennsylvania Avenue during the District of Columbia Emancipation Day 2012 Parade on Monday, celebrating the 150th anniversary of slaves being freed in the District on April 16, 1862, by President Abraham Lincoln. (Rod Lamkey Jr./The Washington Times)

Caprice Casson offers water to Dana Treece, 10, a drummer in the J.C. Nalle Elementary School band, as they make they way along Pennsylvania Avenue during the District of Columbia Emancipation Day 2012 Parade on Monday, celebrating the 150th anniversary of slaves being freed in the District on April 16, 1862, by President Abraham Lincoln. (Rod Lamkey Jr./The Washington Times)