They're making heavy moves to touch her and push up on her. In their culture you are never supposed to touch women you are not related to, they don't even shake hands with unknown women outside of Westernized settings. They are thirsty to touch girls so they (meaning the kind of guys in that video, not all Indian men) see a white woman and take immediate opportunity to get a feel. What they are doing would be considered EXTREMELY inappropriate to do to an Indian stranger, but they know that the White woman doesn't know any better so they take advantage.
Imagine if a construction worker just walked up to a girl on the street in New York and tried to put his arm around her? There would be hell to pay. Imagine if you were walking with your girl in LA and some random guy pulled his body up against her? In India it's even worse - you go and do that to a strange Indian girl, even if you are Indian, and if her relatives are around then you're about to get your ass kicked on sight. But those guys assume they can move different with foreign women.
You don't know how many times I've been in India and been asked, "So America has free sex, right?" Or how many times I've had foreign friends groped. That's their stereotype of foreign women from a mix of misinterpreted Hollywood movies and ridiculous stereotypes pushed by their own media and gossip.