As I recall (and it may have been another similar panel, I saw him on a couple that touched these themes), Brandon expanded on that by making a point about being the one PoC in an otherwise all-white audience, and how that changed his reaction (he was giving a personal example of watching Django Unchained in a particular theatre), and how he tried to be aware of that dynamic when writing. So not just "how would an all-white audience perceive it" but, how would the one PoC in that sea of whiteness perceive it and what would they see reflected back at them?