India, Aug. 27 -- A video of a Pakistani man clashing with an Indian-origin passenger on a train in London has gone viral online. The clip shows the Indian man calmly confronting the Pakistani passenger, who is dressed in a white shirt and black pants. "You are Pakistani and I am Indian, is that a problem?" he asks. The man confirms his nationality, prompting the Indian passenger to ask, "Why is that a problem?" The Pakistani man then responds, "Because we are enemies."

Surprised, the Indian man repeats, "We are enemies?" The Pakistani man nods in affirmation. Remaining composed, the Indian man says, "I have no problem with you. This is going to go viral," to which the Pakistani man replies, "Yeah, you make it viral."

Shortly after, the...