innocent victim of an attempt to bring someone else's misdeeds to
light, although the innocent victim (the "Shirley") is subsequently
revealed to deserve everything they got, and then some.
The Shirley becomes The Full Shirley when the Shirley responds by
calling people racists.
To pull a Shirley: To try to deflect valid and highly visible
criticism from yourself by suggesting that some other innocent party
is being wrongly harmed by the publicity surrounding your malfeasance.