The quotation comes from Zadie Smith's lecture, in which she's talking about impossible identities. She said: It seems to me that people experiencing impossible identities -- ... for example, muslim and gay, ... --can build up a terrible tension within themselves. ... That is an intimate tragedy. But worse are the occasions when this internal violence faces outwards and becomes lethal to other people: when we project the "other" we are on to another human and hurt or even kill them in proxy. What does "in proxy" mean here? Thank you.