More than a dozen viewers of an online video clip besieged a Beijing vocational training school yesterday demanding punishment for unruly students filmed insulting their geography teacher last week. 'We want them to know we won't let this happen under our watch. There is no way in a 100 years this ugly scene should have happened anywhere in China,' a viewer said outside the Beijing Haidian Vocational Arts School. The 17-year-old said he represented hundreds of Internet users from outside Beijing seeking justice for the teacher. The five-minute clip posted on a website last Tuesday showed an elderly male teacher being harassed by a group of students. One student is seen walking to the front of the room during class and pulling the teacher's cap off while the other 20 or so students cheer. The student approaches the teacher again and appears to tap him on the side of the face after another student throws a water bottle at the teacher. The clip is riddled with abusive language. A third student, believed to be a female student, recorded the scene using a digital camera. The clip drew angry reactions from online viewers as soon as it was posted on the Internet. Several used information in the clip to track down the students and conclude the incident happened at the Beijing Haidian Vocational Arts School. The students' names and telephone numbers were posted on major Internet chatrooms, and many Internet users in Beijing vowed to punish them on behalf of the insulted teacher. According to Beijing Times, the school's president, Xu Suxia, admitted the incident occurred on the campus. Ms Xu was quoted as saying the students were just playing with the teacher and meant no harm. The teacher, in his early 70s, also confirmed to the newspaper that the incident took place in his geography class last week. 'They are not bad kids. Even though they made mistakes, as a teacher I'm responsible for it, too,' the teacher said. Reaction to the clip escalated on the weekend when it was posted on the video sharing site YouTube.com. By yesterday, the clip drew almost 300,000 hits. Major websites have been ordered to stop carrying content related to the clip. One news website source said yesterday no reasons were offered for the ban.