Students across India have been protesting against an attack on a prestigious Delhi university by masked men wielding sticks on Sunday.
At least 40 students and staff of the Jawaharlal Nehru University (JNU) were admitted to hospital with injuries.
Videos of the violence quickly spread via WhatsApp and were then broadcast on television, sparking shock and outrage.
Protests are taking place in the cities of Chandigarh, Bangalore, Mumbai and Hyderabad as well as the capital Delhi.
Police say they have identified some of the assailants. However, many protesters on Sunday accused police of being slow to respond to Sunday's attack.
The violence has been condemned across the board, including by Defence Minister Nirmala Sitharaman and Foreign Minister S Jaishankar.
What happened on Sunday?
At about 19:00 local time (13:30 GMT), a group including masked men and at least one woman began attacking students at JNU. Eyewitnesses say the assailants were armed with stones, sticks and iron rods.
"These were big stones that could have broken our skulls," Prof Atul Sood told India's NDTV channel. "I fell on the side and when I got up, I saw cars completely vandalised."
One video showed the student union president bleeding from a head wound.
Prof Sood said about 50 teachers and 200 students opposed to a hike in hostel fees had been holding a meeting on the campus when the attack began.
Some criticised the response from police and emergency services. Economics lecturer Amit Thorat told Reuters news agency it took an hour from his first call for anyone to arrive.
The news agency also spoke to almost a dozen eyewitnesses who alleged police watched but did not intervene.
What do we know about the attack?
Exactly who was behind the attack, and why it was carried out, is still unclear.
The students at the meeting, who have been protesting against a rise in hostel fees for the past few months, blamed it on the Akhil Bharatiya Vidyarthi Parishad (ABVP), a right-wing student body linked to India's governing Bharatiya Janata Party (BJP).
However, ABVP leader Durgesh Kumar said members were the victims, and that some of them had been injured.
"These goons are roaming around the campus fearlessly with batons and weapons and wearing masks," he told BBC Hindi. "They are beating up the students of ABVP and then they are acting innocent and saying that ABVP people started the ruckus.
"The opposition is on their side in their manufacturing of stories. Left-leaning people are… want to transform this campus into Naxal (Maoist rebel) camps."
The university blamed the attack on a "group of students" opposing an ongoing admission process to register new students. It is widely believed that the statement referred to leftist students who have been protesting against the fee hike.
There were violent clashes at JNU last year over the rise in hostel fees.
What are students saying?
It did not take long for students and activists across the country to mobilise. On Monday, about 1,000 people gathered in Mumbai, with demonstrations in Hyderabad, Chennai (formerly MRead More – Source
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