I saw a different kind of slavery in a entirely different world. OK.. thought it only existed in that part of the world and within specific communities. Later I grew up, situation changed once who were masters became slaves and slaves became masters but current masters still refer to past and continue to target old masters. I feel past should not be given too much importance if its sending out negative message. Slavery is not just limited to any particular country, colour or tribe so no one to blame. Its every where, spread across all different regions in different forms.
I think Current world is always better than past one and future will be better than current one. Humans are progressive and will evolve in right direction. Happiness is the only dominant emotion of humans so it ll take the world towards right direction.