“That information was suppressed by the Chicago Police Department until the midpoint of this trial,” Todd Pugh, one of Morgan’s attorneys, said in seeking the mistrial. “We could have conducted further inquiry, and perhaps there’s a strong probability that we would have secured this music video. ... There were individuals that were on film in a music video waving weapons, one of which turns out to be a murder weapon in the most sensational murder trial that this county has seen in 10 years.”