. >>> check out this video captured outside a high school in gothenburg sweden. >> oh, my. >> oh!what? >> what you're seeing is a girl being knocked down violently in what police are calling a small riot. the story behind this is what's garnering so much attention. a few days ago, some instagram posts started appearing where more than 200 girls were named images of these girls shown. these girls were ages 13 to 14. according to some reports. they're calling these posts on instagram quote/unquote slut shaming. now, that instagram account was closed down but quickly facebook posts started appearing. eventually the facebook posts started encouraging students to meet outside of this school because the people responsible for these awful sexually driven posts were going to be there. and therefore, nearly 500 students showed up. >> i really feel bad for young kids nowadays. social media has the power for such good, but it also can be used powerfully to slander somebody. >> police do believe a 17-year-old girl is behind the initial inta gram posting. >> this girl that was being trampled i