A shocking video posted to Twitter shows several girls in Chicago jumping and beating a 15-year-old girl who has special needs, according to a friend of the victim. Police have now opened an investigation.

WARNING - DISTURBING VIDEO: A shocking video posted to Twitter shows several girls in Chicago jumping and beating a 15-year-old girl who has special needs, according to a friend of the victim. Police have now opened an investigation. MORE: https://t.co/62zE7wO7Fq pic.twitter.com/8LgHYuOS2h

— FOX 32 News (@fox32news) July 24, 2019