NEW DELHI: The legislator was full of outrage when he arrived in the north Indian village days after the killing of a Muslim farmer who was rumored to have slaughtered cows.

A Hindu mob had smashed through the heavy wooden door to the man's home, then beat him to death with his wife's sewing machine.

Read: Indian man beaten to death, son injured over beef eating 'rumours'

The legislator's anger, though, was not about the killing.

Instead, Sangeet Som was furious that men had been arrested in the attack in the village, just 30 miles from New Delhi.

Som, a member of India's ruling Bharatiya Janata Party, called the arrests “atrocities on innocent villagers.” As for the family of the dead man, he dismissed them as “those cow killers.“

A few days later, a half-dozen BJP politicians slapped around a legislator on the floor of a state legislature, angry that he had served beef at a party.

Also read: Lawmaker attacked in Kashmir assembly as beef row intensifies

In south India, six members of a leftist student political party were suspended after their attempt to serve beef curry on campus to protest the farmer's killing set off a melee.

On Friday, violence swept another northern village amid rumors that a cow had been slaughtered, with a crowd, who had chased down two Muslim men they suspected of cow-killing, clashing with police and burning several cars. Some villagers and police were injured, but no major injuries were reported.

Cows have long been sacred to Hindus, worshipped as a mother figure and associated since ancient times with the god Krishna. But increasingly, cows are also political.

They have become a tool of political parties, an electioneering code word and a rallying cry for both Hindu nationalists and their opponents.

On Thursday, Prime Minister Narendra Modi broke his silence on the late September mob killing of Mohammad Akhlaq, saying communalism threatened the country's economic growth. “We should decide if Hindus want to fight Muslims or poverty. Muslims must decide if they want to fight Hindus or poverty,”

Modi said at a campaign rally in Bihar state, where elections start next week. “It is unity, communal harmony, brotherhood and peace that will take the nation forward.“

Also read: Modi appeals for religious unity after beef murder row in India

But Modi also rose to power as Hindu nationalist, and since his election last year hard-line Hindus have been demanding that India ban the sale of beef, a key industry within India's poor, minority Muslim community.

In many Indian states, the slaughtering of cows and selling of beef are already either restricted or banned. In the past, Modi has spoken out angrily against India's beef industry.

“Brothers and sisters, I don't know whether this saddens you, but my heart screams out” at the rise of Indian beef exports, Modi said in a 2012 speech. “I am unable to understand why you are silent, why you are taking this lying down. “

Since becoming prime minister, though, he has danced delicately between an intense desire to be seen as a tolerant international statesman, the sort of man who is greeted warmly by presidents and jokes around with Facebook's Mark Zuckerberg, and the need to satisfy a political base that is deeply distrustful of Muslims and other minorities.

That dance has, his critics say, emboldened extremist Hindus and given rise to everything from a series of church vandalisms to the recent mob killing.

Criticism of cow slaughter, some say, is often simply code for anti-Muslim sentiments.

Explore more: How Narendra Modi helped spread anti-beef hysteria

India, a country of 1.3 billion, is about 81 per cent Hindu and 13 per cent Muslim. “I am afraid the hotheads will get busier. They are greatly encouraged and their strength is rather strong,” said Inder Malhotra, a political analyst and former editor of the Times of India newspaper.

“One of the reasons this prime minister keeps quiet about it, is that he doesn't want to lose these Hindus, because they are a very strong proportion of his supporters.“

He criticised Modi for not speaking more strongly against the recent mob attack, and for his silence about comments like Som's.

“Modi has not said a word against those in his party who have been making the most obnoxious statements,” Malhotra said. Authorities are still investigating after the arrrests of eight villagers for Akhlaq's death, but announced Friday that the meat found in his home turned out to be mutton, not beef.

Also read: Meat in Muslim man's fridge mutton not beef, forensic test reveals

Meanwhile Som, the Hindu firebrand and avowed strict vegetarian, has denied media reports that he once owned part of a major Indian meat export company.

The company exports goat and buffalo meat, but apparently not beef. Amid so much rancor, it is not hard to find people sympathetic to the attack on Akhlaq.

“We should drink cow's milk, not its blood,” Ram Mandal Das, a priest at a Hindu temple in New Delhi that also shelters abandoned cows, said Friday. “If someone attacks mother cow, or eats it, then this sort of reaction should happen,” he said of Akhlaq's killing. “It is justified. “

Modi supporters see some opponents as deliberately provoking Hindus.

Some “beef parties”, when beef is eaten in defiance of local laws, are clearly intended to invite a backlash and score political points against the BJP.

Such actions “have pushed a society that worships the cow as mother to question the real motives of the seculars,” Tarun Vijay, a member of parliament and top BJP official, wrote recently in The Indian Express.

He also criticised the killing of Akhlaq, writing: “Lynching a person merely on suspicion is absolutely wrong.” (Maybe: “Vijay left unsaid if he felt lynching was justified if there is evidence of cow slaughter. “??)

The public bitterness on both sides hides the reality of much of Indian life, where Hindus and Muslims can live alongside one another for decades without incident.

In Akhlaq's village, for example, more than 100 Hindu villagers trekked to his family's home a few days after the attack, to urge his family not to move away.

Hindu leaders also pledged to ensure that upcoming Muslim marriages went ahead without incident.