The protests concern a new law that allows millions of migrants from Afghanistan, Pakistan and Bangladesh who arrived in India illegally before January 1, 2015 to become citizens.

However, the law does not include Muslims who have come to the country under the same circumstances, and the UN has concluded that the law is discriminatory against believers.

Several human rights groups and a Muslim party are challenging the new law in the Supreme Court, claiming that the law violates the constitution and India's secular traditions.

Over 100 students injured

The protests have taken place in the northern and eastern parts of India and six people have died, reports the BBC. Internet has been shut down Curfew applies in some areas. Train traffic has been suspended following protests in the state of West Bengal, when activists set fire to trains and buses.

Over 100 students have been injured after police attacked protesters at two universities in India's capital Delhi and the city of Aligarh. Police must have used batons and tear gas against the students at the clashes.

- I don't know why I was beaten. I didn't even protest. I was in the university library when the police entered the university area, says 26-year-old Mohmmad Minhaj Uddin, a student at Jamia Millia Islamia (JMI) in Delhi, to al-Jazira.

Delhi Police are defending their actions, saying they had to resort to violence when protesters began burning buses.