Human beings differ from one another in many ways. Historically, many societies have tried to create a homogeneous society in which everyone is the same. Experience and reality have proven that this does not work, because one group of people will end up trying to make all others like them, as though they themselves were the ultimate criteria of how human society should be. No person or group can claim to be that model. Modern societies tend to be democratic. There is, however, very often a tension between persons who want all others to be more like the main population group, calling for unity and a common shared identity, and others who want to allow everyone to be as different as they like, regardless of the impact on social harmony and
