Bernard tells Cosgrove citizens filming the police on their phones holds police accountable. This is only true if crucial footage isn't cut and edited out before the video's released to the public, as is also the case with police body cam footage.
When Frank shines a light into the dryer it is spinning, meaning it is working, but he is able to open it without stopping it. Modern machines cannot be opened while running, also the hoodie would be very hot when taken out.
Jamie Ross is shown to be still working as an A.D.A. in the District Attorney's Office. However, she was a judge when she last appeared in 41 Shots (2005) and Bang & Blame (2005).