Can there be (and when has there been) progress without injustice?

Okay, so it’s not only because I’m watching the Story of US on the History Channel with its brilliant depiction of the pushing of the Native American people to reservations because of whites seeking profit and progress for themselves, so to speak…this has been brooding in my head for a while…things like railroads or towns or anything else that contribute to expansion and betterment of life for some always get achieved through some kind of disproportionate hell for those who help them get there…whoever is in power picks whoever is not and later discards of them…with history always repeating itself as this is a global issue and we’re no more living in a post-colonial world than we are in a post-racial, post-feminist America…

So, tell me, when have leaps of progress been achieved without blood being shed, without some groups becoming the doormat, etc. What of science – is scientific progress exempt? What is progress, anyway? Thoughts?