http://www.slate.com/articles/sports/sports_nut/2015/01/the_mueller_report_the_nfl_s_ray_rice_investigation_reveals_major_screw.html

Former FBI director Robert Mueller has wrapped up the NFL’s internal investigation of its handling of Ray Rice’s Feb. 2014 assault of his then-fiancée Janay Palmer. Mueller’s report would appear to absolve the league of the flashiest accusation against it: that it had lied about when it had access to security footage of Rice knocking out Palmer. This partial exoneration, though, belies the report’s true findings: that the NFL could have easily gotten access to the tape, and that it didn’t need the tape to determine the seriousness of Rice’s assault.