Justice related songs?

[finn's mom]

Rage Against the Machine always had a lot of political lyrics, some related to justice, if I remember correctly...it's been awhile since I really sat down and listened to any of my Rage records. And, not sure if that would be approrpriate for school.

[MariaM]

Thanks guys, I will check these out. I need 5 or more, but there have to be at least 5 different artists. I'm sure these suggestions will help, thanks.