Opening the Smithsonian Institution's first national museum about African-American history here yesterday, Obama, the first African-American president, said that the new museum elevates the often-overlooked impact of black Americans and will help others better understand the breadth of the American story.
"This national museum helps to tell a richer and fuller story of who we are," Obama said, as he drew on key figures and moments in history, from slavery through to present day protests over police shootings of African-American men.
The opening ceremony for the museum also was attended by civil rights icon Rep. John Lewis, former Presidents George W. Bush and Bill Clinton and Chief Justice John Roberts.
Calling it an "act of patriotism" to understand African- American history and the struggles of all Americans, Obama, 55, said "a great nation doesn't shy away from the truth."
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"Hopefully, this museum makes us talk to each other and listen to each other and see each other," he added.
Obama also said the museum can provide context to the current national debate on the relationship between law enforcement and black communities that recently made headlines following the police shooting deaths of black men in Tulsa, Oklahoma, and Charlotte, North Carolina.
"Perhaps it can help a white visitor understand the pain and anger of demonstrators in places like Ferguson (Missouri) and Charlotte. But it can also help black visitors appreciate the fact that not only is this younger generation carrying on traditions of the past, but within the white communities across the nation, we see the sincerity of law enforcement officers and officials who, in fits and starts, are struggling to understand and trying to do the right thing," he said.
The effort to bring the museum to life began decades ago but was finally set in motion in 2003 when Bush signed a bill creating it. Ground was broken in February 2012.
The Smithsonian says the museum is the only one in the US exclusively focused on African-American life, history and culture, but organisers say it is also meant to capture the story of all Americans.