http://www.flatfoot56.com/
These are photos from concerts where Flatfoot 56 played, so they may be of other bands that played the concert as well.
Riot Fest 2013 Sep 13 - 15, 2013 Chicago, Illinois, United States Uploaded by Tom Kennedy
Riot Fest 2013 Sep 13 - 15, 2013 Chicago, Illinois, United States Uploaded by Cory 182
Riot Fest 2013 Sep 13 - 15, 2013 Chicago, Illinois, United States Uploaded by Josh5180