Will posthumans or superintelligent machines pose a threat to humans who aren augmented?
Human society is always at risk from some group deciding to view another group of humans as fit for slavery or slaughter. To counteract such tendencies, modern societies have created laws and institutions, and endowed them with powers of enforcement, that act to prevent groups of citizens from assaulting one another. The efficacy of these institutions does not depend on all citizens having equal capacities. Modern, peaceful societies have large numbers of people with diminished physical or mental capacities along with many other people who may be exceptionally physically strong or healthy or intellectually talented in various ways. Adding people with technologically enhanced capacities to this already broad distribution of ability would not necessarily rip society apart or trigger genocide or enslavement.
