Kenan Malik in Pandaemonium:
Identities are, of course, of great significance. They give each of us a sense of ourselves, of our grounding in the world and of our relationships to others. At the same time, politics is a means, or should be a means, or taking us beyond the narrow sense of identity given to each of us by the specific circumstances of our lives and the particularities of personal experiences. As a teenager, I was drawn to politics because of my experience of racism. But if it was racism that drew me to politics, it was politics that made me see beyond the narrow confines of racism. I came to learn that there was more to social justice than challenging the injustices done to me, and that a person’s skin colour, ethnicity or culture provides no guide to the validity of his or her political beliefs. Through politics, I was introduced to the ideas of the Enlightenment, and to the concepts of a common humanity and universal rights. Through politics, too, I discovered the writings of Marx and Mill, Baldwin and Arendt, James and Fanon. Most of all, I discovered that I could often find more solidarity and commonality with those whose ethnicity or culture was different to mine, but who shared my values, than with many with whom I shared a common ethnicity or culture but not the same political vision.
Politics, in other words, did not reinforce my identity, but helped me reach beyond it. If I was growing up today, though, it is quite possible that my political education would be much narrower, because it would be shaped primarily by my personal identity and experience, rather than providing a means of transcending it; because all politics has, for so many, come to be seen as identity politics.
To understand the characteristics of contemporary identity politics, we need first to go back to the origins of modern politics, at the end of the eighteenth-century.
More here.