RSBM
Not in any way singling you out inspector, however as a retorical question, why did MS testimony and how he presented himself surprise so many people if there wasn't already a character bias in place after 4 months?
I was annoyed by the implications that he was more likely to be guilty because he didn't have a high school education, listened to and performed rap, played video games, didn't have a "real" job, and/or smoked and sold pot. OTOH, despite a firm belief that 99.9% of adults have free will, I was willing to consider he was under DM's thumb. That is, until NS's cross. MS is intelligent and quick-thinking. He's definitely not a pushover or shrinking violet.
ETA: add graffiti, et al, to my first sentence.