In political discourse, we often see that individuals, as part of a nation, a culture, a political party or an ideological group (e.g. conservatives and liberals), are subject to a kind of homogenization. Individuals are no longer different personalities but rather parts of a group.
In the case of cultures: every culture has its typical personality, its way of life, its way of being human, its national character or “Volksgeist”. The personal identity is a collective identity. People are specimen rather than different individuals. This cultural identity – Chinese are hard working people, Scandinavians somewhat to themselves etc. – influences or even determines the ideas and behaviour of the individual members of the culture and is formed by the religion of the nation, its language, history etc. An individual is born in a culture and formed by it, from his earliest years on. He cannot choose another one and cannot reject his collective identity. His life follows certain patterns that are older than him and that will live on after him. Everything which may seem at odds with the collective identity is in fact comparable to the small movements on the surface of the sea that may go in different directions but that cannot escape the underlying current. Like the current, the culture may not always be visible but it does determine everything.
If individuals receive their personality from their environment and culture, then the members of one group share the most basic assumptions and convictions. And if that is true, it is a justification of ethnic cleansing, wars for national independence, separation etc. because a mono-cultural society will have fewer conflicts than a multicultural one, given the common identity and convictions of people of one culture. This discourse is common in nationalism.
The same, but less extreme, can be seen in political discourse like the “culture war” in the U.S. We reduce people to the groups to which they belong.
However, all this is based on psychological simplifications. Although it is undeniable that the environment we live in, the culture we belong to and the groups we are part of shape our identity, there is no reason to ignore the possibility of individuals to free themselves from their immediate environment and tradition. The whole world can influence us and we may choose to be extremely individualistic. Belonging and identifying with a group are important, but so are originality and individuality. Human rights are designed to give us the possibility of dissent, difference and individuality.