From Wikipedia:
A trigger for much of the criticism was Morrissey's performance at the first Madness Madstock! reunion concert at Finsbury Park, London, in 1992, in which he appeared on stage draped in the Union Flag, a symbol often associated with nationalism and hence with far right groups in Britain. As a backdrop for this performance, he chose a photograph of two female skinheads. The NME responded to this performance with a lengthy examination of Morrissey's attitudes to race, claiming that the singer had "left himself in a position where accusations that he's toying with far-right/fascist imagery, and even of racism itself, can no longer just be laughed off with a knowing quip"
Brian