US President Barack Obama paints a quote of Martin Luther King Jr. on the wall of a library at the Browne Education Center in Washington, DC, on January 16, 2012, to take part in a community service project in celebration of the Martin Luther King, Jr. Day of Service and in honor of Dr. King?s life and legacy. AFP Photo/Jewel Samad (Photo credit should read JEWEL SAMAD/AFP/Getty Images)