There are at least two bands called Underclass
These are photos from concerts where Underclass played, so they may be of other bands that played the concert as well.
No Pun Intended / The Burn Victims / Underclass / Sore Thumbs / Steve Violence Aug 2, 2003 Sacramento, California, United States Uploaded by Sacramento Shows
Tijuana Gasser / The Abuse / The Bunny / Underclass / The Burn Victims Jun 7, 2003 Vacaville, California, United States Uploaded by Sacramento Shows
Pummel / Underclass / The Drugstore Cowboys / The Runs Mar 1, 2003 Citrus Heights, California, United States Uploaded by Sacramento Shows