Bollywood stars seldom weigh in on politics, so videos showing two celebrities criticizing Indian Prime Minister Narendra Modi — and endorsing his main opposition, the Congress party — were bound to go viral. Claims circulating online in India recently have misstated details about casting a ballot, claimed without evidence that the election will be rigged, and called for violence against India’s Muslims. Researchers who track misinformation and hate speech in India say tech companies' poor enforcement of their own policies has created perfect conditions for harmful content that could distort public opinion, spur violence and leave millions of voters wondering what to believe.