The Banksy retrospective which has been drawing modest crowds to the basement of Sydney Town Hall in recent weeks is not officially part of this year’s Mardi Gras program. But some of the artworks on display might make visitors think the exhibition’s timing is serendipitous. Like anti-capitalism, environmentalism and every other Big Left bandwagon, LGB rights have been a Banksy staple for so long now that images like ‘Kissing Coppers’, a stencil sprayed on the wall of a Brighton pub twenty years ago, now seems quaint rather than confronting.