Loading Mr Bartlett, a former Greens and Democrats senator, said the placards were quickly replaced. "I’ve had some [placards] pulled down already at Windsor and Paddington, it's totally not acceptable and very frustrating for everybody, particularly given these were outside people's homes ... [they] feel extra frustration and violation," he said. "It's particularly frustrating with swastikas involved, it could be moronic kids or something more sinister ... we need to keep maintaining social opprobrium about putting it [swastika] up anywhere, particularly when it's vandalising people's property." Mr Bartlett said he did not believe a police complaint was filed this time because there was no video evidence, but that could change.

"As we roll out more [placards], we’ll be contemplating a few measures to make it a bit more feasible to identify people in the future," he said. "Ways of surveilling things are a lot cheaper than they used to be and with some residents, they have had their signs taken down before, so we might be adding some camera sites, where appropriate. "I'm not a fan of the surveillance state, but we're thinking of cameras inside the fence line." Senator Waters said the vandalism was "sickening", but it did not come as a surprise. "It's not surprising, given the actions of [Fraser] Anning, One Nation and even the Coalition ... it's what happens when politicians spread messages of hatred," she said.

Loading "These people who have done the defacing should take a long hard look at themselves. "But, when the fascists are against you, you know you’re on the right track." Senator Waters said, like Mr Bartlett, it was not the first time her placards had been torn down or vandalised, but she believed a single repeat offender may be responsible. "We’ve seen a little bit of it [vandalism], but it's all looked quite similar, perhaps it's one cranky guy who is a bit of a far-right extremist because the graffiti is similar on all of them," she said.