Banksy/Tivoli collaboration

Having listened to several episodes of The Banksy Story on BBC Radio 4 I feel certain that if the artist leaves one of his iconic “Placard Rats” in a public park without a slogan it is an open invitation to the locals to shout about something that matters to them.
I considered lots of options but didn't want to provoke spray wars, I do hope I haven't, but to be perfectly honest with you, I don't think any of the locals know this is here, they certainly didn't notice it covered with an even bigger protective stencil nor a suspicious old lady hanging around shaking a spray can.