A birthday party turned violent in Gurugram last night with a mob thrashing a group of college students over parking dispute. The owner of the farmhouse where the party was on was killed after he and his staff jumped to their rescue. One of the students and a farmhouse employee were injured in the clash and had to be hospitalised. The dispute occurred when the college students arrived for a birthday party at the farmhouse. Shortly after, over a dozen men entered the farmhouse and started thrashing the students.