This PSA posters represents the 10 Stages Of Genocide by the label pointing to the left but looking further you see that it also says History on the label pointing right meaning learning about history and not repeating it is the right way to go but if we don't realize the mistakes and the bad things we have done then we could be going back in time and repeating it. The top label is supposed to represent a timeline, as we go through life we don't want anything bad on the timeline pinpointing the mistakes we have made as a human race. The background shows that there was a time when the line between right and wrong was blurred and we have to make sure it never is again.