In his Republic Day message posted in Facebook, he said the effort to divide the people and make them fight each other by differentiating 'as we and them' has to be checked and defeated, but did not name anyone.
The move to bring the people who follow different customs, different religious belief and different languages into one single culture was a serious challenge to nationalism, he pointed out.
"It has to be checked and defeated," the CM said.
Steps also should be taken to bring the marginalised section in the society to the mainstream and also participate them in the developments of the country, Vijayan said.
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Government should make initiatives to bring Dalits, women, tribals into the mainstream of the nation.
"But, we should realise that the administration has failed to ensure safety of Dalit, women and children in many places," he said.
The Kerala CM said the country had not yet succeed in providing full protection to the life and property of its citizens.
"Number of farmers committed suicide after 2000 was not one or two. This was due to the wrong policies adopted by governments," he said, adding "People lost life due to the note ban also.
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