Council members are set to receive training on how to spot white supremacist propaganda after an influx of stickers have been spotted in Hull.
They were the work of a far-right group called the Hundred-Handers, an online organisation with followers who put up stickers featuring captions like 'it's okay to be white' and 'Western civilization is white civilization'.
People who join are required to purchase a specific make and model of thermal printer to print the stickers so the ink does not run in the rain.
The issue was discussed in a council meeting on Thursday afternoon, where members of the People and Communities Committee were encouraged to consider how they may be vulnerable to racist propaganda.
Tracy Harsley, the council's assistant director of City Safe and Early Intervention, said: "A lot of our focus previously was about Muslim radicalisation, but we now talk a lot more about extreme right-wing activity.
"With some of the problems we've got around social inclusion and changing migrant populations, this is a very important issue.
"What we don't realise about extreme right-wing activity is that it can involve very nuanced material that we don't necessarily know we're being exposed to.
"We want members of the council to think about those symbols and conversations."
Mrs Harsley said she had undergone training in how to spot far-right materials and was surprised by the prevalence of such symbols.
She said what might first seem to just be a "gothic cartoon" had been shown to be harbouring symbols with far-right connotations.
"It's really, really subtle," she said.
"The reason we wanted to do training in awareness of it is because we're looking at things we've never seen before."
Councillor Dean Kirk, chairing the committee meeting, said he had been shocked by similar things he had heard while canvassing in the streets during the general election last month.
"I've been surprised by how many people have heard things, especially with the latest election and being out on the doorstep," he said.
"While there are some that say things just to get rid of us there will be people we come into contact with who really do mean certain things.
"Last year was horrendous, I've seen a lot of things going on just knocking on doors and on the street. And you can't rule out any areas."
Mark Charlton, head of Community Safety and Partnerships at the council, said the stickers were put up in one particular area of the city, but declined to reveal on record where it was.
The Hundred-Handers group has a Twitter following of over 4,000 and anonymously distributes its materials, which are often themed around false conspiracy theories about white genocide, before taking pictures of them and posting them on its social media channels.
Not having a geographical base means the stickers have appeared as close as York and as far as Spain and the USA.
The group provides templates on its website for followers to print off using their special printers, even including the option of making fake Extinction Rebellion stickers to "get creative with", using a more recognisable name on the opposite side of the political spectrum.
After government figures showed racial hate crime increased by 11 percent nationwide last year, Mr Charlton warned that even though Hull is considered a "low risk" city relative to others in the UK, many people are vulnerable to such messaging.
"There is right-wing activity in the city," he said.
"My message to people is that Hull is a low risk city, but don't consider it no risk."
He said council members would soon be receiving a pocket guide as part of a "new communications and training package" describing how to relay risks and concerns around far-right ideology.
"It's our responsibility, if we suspect something, to report it," he said.
"There has been an increase in the last year in reporting and there are more and more people vulnerable to radicalisation. It's not just children and young people, but adults too.
"This is council-led, where our role is about protecting those at risk."
The committee members agreed that the training could first be tested with them before potentially being deployed across the rest of the council.
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