"LA Noire" case question (SPOILERS!)?

So I just finished up the case called "The Golden Butterfly". Or something like that. At the end, both Hugo and the child molester guy were thrown into interrogation. I interviewed Hugo first, and caught him red-handed on EVERYTHING. At the end of the discussion, it gave me the option of charging him with the murder, or leaving the interrogation room. I felt that there was conclusive evidence to put him away for the murder. So I did. Then, as soon as it finished, a cut-scene comes up. The boss-dude (Irish guy) starts flipping out on me, saying I shamed the police and all this crap about how I am a bad detective. But why? Was it because I accused Hugo and not the molester or something? What determines these things? Can these cases have different end results on who gets blamed or something?