I can think of the following:
- Human-created mass extinctions
- Industrial meat production
- Institutionalisation and isolation of the elderly
- Environment destruction
What are other contemporary society’s moral blind spots?
The whole of of the way we live will seem shocking in every detail. Simply consider a ten or fifteen thousand year period. Morality, the whole of human behavior, is a function of what is believed to be possible. For instance, the more the weather becomes seen as technologically controllable, the more a small but growing part of the population conceives a burning resentment for those human powers that allow disasters and droughts and so forth. However, formulating deeper unfoldings leads to annihilation of the possibility of projecting ourselves into them. The more the biological substratum comes available to conscience manipulation the more inconceivable the manipulations we can't yet foresee become. For instance, such things that have long been imagined, such as meat made in laboratories rather than slaughtered which obviate harming brute creatures. Elimination of the elderly through putting a stop to aging, and reversing aging. But, it is all so multifarious one can't suppose anything like this kind of consideration will exist. The sheer strangeness is outside our ability to project ourselves intelligently and at future no one will any longer regard human beings as themselves (even more so than today no one considers themselves some distant sea going ancestor of the human as it will not merely be a matter of Evolution, but radical technology and whatever follows as the next and genuine successor to Science) or worth "condemning". The conception of condemnation will have long ceased to exist and unconstrained forces will focus on points utterly alien to our own time.