this video was posted on twitter by our own sheryl burke tcherylo drive through that. >> you go insideyou're still breathing the air from the outside, right? so we went in and closed it up, it was no better. >> we asked the air quality management district about the impact it has had on the air that we breathe, and they say it will take a week. >>> we're digging for answers for what led up to this wild and chaotic scene last night. casebordea skateborders and police crashing. >> i policed a call to see if anyone will face charges in this event that occurred. but i will show you the video from yesterday, you see they are riding down very trafast. a large group of skatebordarska were having what they called a rally. the crowds would not allow a person who was in need of help. then you had two patrol cars value dannized. one officer was sent to a hospital for injuries. they say police overreacted, but police described the scene as a very hostile environment. the first fall initiated the calvary, and there was about 70 cops here. >> we have taken bottles and skateboards from the crowd. >> a