Addressing the National Integration Council (NIC) meet here, Singh said: "Social media has been used fan communal violence. Earlier also, social media was used to trigger violence against people of the north-east."
"We cannot let anti-national forces misuse social media," he said.
"Social media is about expressing opinions freely and we need to maintain that sense of freedom. If used properly, social media can spread brotherhood and unity."
Discussing the recent riots in Uttar Pradesh's Muzaffarnagar that claimed at least 48 lives, the PM said: "The Muzaffarnagar violence led to a huge loss of lives and property."
"We have seen communal violence in Kashmir and Assam in the past few months. And the government needs to take every step possible to deal with this violence," he said.
He said government officers should deal with such incidents carefully.
"Local administration must respond promptly. It must take strong action against those who are behind communal violence," he said.
The PM said small incidents are being used to provoke larger violence.
"Anti-national forces are using small incidents to trigger communal violence. Anyone from any party found involved in such incidents will be punished," he said.
Singh said: "The government should do everything to act against those spreading communal violence, no matter how powerful they are. We can't let any weaker section feel that they are not part of the mainstream."
Spaking on violence against women, Singh said: "It is a shameful matter that women are not treated properly. I am hopeful this meet will come up with good suggestions to deal with violence against women."
"A country can only progress if women can move around freely, make independent choices," he said, adding, "We must change mindsets to stop crimes against women."
Earlier in the day, addressing the gathering, Union Home Minister Sushil Kumar Shinde said: "NIC provides us with unique ideas for a unique and pluralistic society.
We propose to discuss safety of women, no country can progress without respecting its women."
"We will also discuss atrocities committed against SC/STs. It is our foremost duty to maintain unity and harmony in every state of our country," he said.
At the NIC meet, Bihar Chief Minister Nitish Kumar was seen exchanging pleasantries with Bharatiya Janata Party (BJP) patriarch LK Advani.
Gujarat Chief Minister and BJP's prime ministerial candidate Narendra Modi skipped the meet. In fact, Madhya Pradesh Chief Minister Shivraj Singh Chouhan is the only BJP chief minister present at the NIC meet.
--IBNS (Posted on 23-09-2013)