I think this song is about how the writer is perceived by the outside world versus how he perceives himself. A camera can take pictures and provide you with a perspective of how you look at a certain point in time. It is truthful to an extent. The writer in this song has told many lies in his life, to others and more importantly to himself. He has developped a deluded sense of who he is and he needs to obtain an outside objective look at what he has become ("reminding which lies that I've been hiding [what is not true], which echoes belong [which is the true him]"). I believe he was provided this viewpoint by someone he knows and trusts ("I'm counting on a heart I know by heart to walk me through this") and is angered by what he hears or sees ("I smashed the camera") because it reflects just how different he is in reality versus how he perceives himself ("I'm lost on the sidewalk, and no its not okay").
I think this song is about how the writer is perceived by the outside world versus how he perceives himself. A camera can take pictures and provide you with a perspective of how you look at a certain point in time. It is truthful to an extent. The writer in this song has told many lies in his life, to others and more importantly to himself. He has developped a deluded sense of who he is and he needs to obtain an outside objective look at what he has become ("reminding which lies that I've been hiding [what is not true], which echoes belong [which is the true him]"). I believe he was provided this viewpoint by someone he knows and trusts ("I'm counting on a heart I know by heart to walk me through this") and is angered by what he hears or sees ("I smashed the camera") because it reflects just how different he is in reality versus how he perceives himself ("I'm lost on the sidewalk, and no its not okay").