By Jennifer Arellano
Updated August 28, 2013 at 09:41 PM EDT

Today is the 50th anniversary of Martin Luther King Jr.’s powerful civil rights speech, ‘I Have a Dream.’ President Obama spoke today on the lasting impact of the iconoclastic leader and there will be several televised events commemorating the 1963 March on Washington as well. NBC set up a hub with interviews of leaders, journos, and athletes talking about the MLK legacy.

We’ve rounded up the best celebrity tweets with the hashtags #dreamday, #MLK, and #ihaveadream.