Not only is U2 one of my favorite bands, they have depth to their much of their music. U2's Pride (In the Name of Love) dives into MLK. This song is about those who have laid down their lives in the "name of love", including Jesus (betrayed with a kiss) and the last verse is about MLK.
Early morning, April 4
Shot rings out in the Memphis sky
Free at last, they took your life
They could not take your pride
On a related note, is this video from Fr. Robert Barron: