issue. and that needs to change. >> reporter: just a few blocks away, in federal court, city attorneys argued against the release of another police shooting video. this time of cedric chapman, an unarmed black teen and carjacking suspect who was shot and killed by police in early 2013. the city's argument in court? the release could taint a jury pool, and among other things, be misused by the media. but the chapman family attorney points to the recent release of the laquan mcdonald and ronald johnson videos and calls on the mayor to make the chapman video public. >> if they want to come out and really lead the charge that he wants change, here's the opportunity. >> reporter: in court, the judge said there is a lot of interest in this, and for good reason. but decided not to release the video for you, pending a review of the law by both sides. in a statement, the city's law