Forty-eight-year-old Khan was hacked and burnt to death in Rajasthan's Rajsamand district. In a video of the killing shared on social media, the accused, who has been arrested, is seen declaring that he killed the man to save a woman from "love jihad" and warning that anyone challenging the majority community would "meet the same fate".
"Political parties should come out against it...," he said.
Scores of young people and professors of various universities and activists turned up to form a human chain at Connaught Place.
Earlier in the day, several Muslim organisations and students outfits staged a demonstration near Bikaner House condemning the attack and demanding resignation of Rajasthan Chief Minister Vasundhara Raje.
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