April 12th-150th anniversary of bombardment of Ft. Sumter

Booming cannons, plaintive period music and hushed crowds ushered in the 150th anniversary of America's bloodiest war on Tuesday, a commemoration that continues to underscore a racial divide that had plagued the nation since before the Civil War.

The events marked the 150th anniversary of the Confederate bombardment of Union-held Fort Sumter in Charleston Harbor, an engagement that plunged the nation into four years of war at a cost of more than 600,000 lives.