WASHINGTON, D.C. - A 50th anniversary ceremony to celebrate Dr. Martin Luther King's 'I Have a Dream' Speech was held at the Lincoln Memorial Wednesday.

More than 200,000 Americans marched together in Washington, D.C. that day calling for an end to segregation.

President Barack Obama, other well-known lawmakers and celebrities including Oprah Winfrey addressed the crowd.

"We rightly and best remember Dr. King's soaring oratory that day, how he gave mighty voice to the quiet hopes of millions, how he offered a salvation path for oppressed and oppressors alike," Obama said. "His words belong to the ages, possessing a power and prophecy unmatched in our time."

Former Presidents Jimmy Carter and Bill Clinton also attended.