a person who, though not a union member, pickets in sympathy with union members forbidden to picket by injunction.
See also: mystery picket
- 1962  Naturally the employers and the provincial government disapprove very strongly of the united support that has developed in labor's ranks. They don't like the citizen picket lines. . . .
- 1963  . . . when an injunction is slapped on a striking union, we . . . often move in as unpaid citizen pickets.