From Pete Seeger to Billie Holiday to Rage Against the Machine to Kendrick Lamar, musicians of all genres have spoken truth to power ...

With Mick Jones and Topper Headon in their ranks, The Clash were an exceptional force in UK punk. Without them, they became nothing more than imitators.

Blink-182's "Stay Together for the Kids" is 17th, and the Clash's "Rock the Casbah" takes the 20th spot. The Offspring's "Why Don't You Get a Job?" is the 48th "conservative rock song" of all time.