Define politics of social divisions

A combination of social divisions and politics can be really  dangerous. A democracy involves competition among various political  parties. As their competition tends to divide society, if they start  competing in terms of some existing social divisions, then it can  convert those social divisions into political divisions, which can lead  to conflict, violence and even disintegration of the country. An example  of this is the disintegration of Yugoslavia into six independent  countries.
However, the combination of social divisions and  politics is not always negative. The political expression of social  divisions allows marginalised and disadvantaged social groups to express  their grievances and ask the government to rectify them. The system of  reservation of seats in Indian legislatures for the socially  disadvantaged has allowed such social groups to have an adequate  representation in the decision-making process.