Street art collective Subset are seeking funds for a documentary on their battle with Dublin City Council over their well-known murals.
The artists have been involved in legal disputes over a number of their murals which have been painted without the required planning permission.
Subset believe art works should not require Council approval like the system adopted by Sydney City Council in 2018.
The Dublin-based collective say the art works "promote citizenship, civic engagement and community participation".
The council prosecuted Subset over a mural named Think and Wonder on Grantham's Cafe just off Camden Street last year.
The street artists were fined €4,500, but succeeded in getting the conviction overturned and securing a new trial.
Two other murals will also be dealt with at a Dublin District Court hearing scheduled for June 16.
The Horseboy mural - a nod to Dublin's horse culture - next to Smithfield Square and a tribute to broadcaster David Attenborough in Portobello are the two other art works DCC allege to be unauthorised under planning laws.
Taking the case is a big risk to the viability of the collective as they are "already barely able to keep things afloat".
A ruling against the street artists could be very costly, but their legal team is operating on a pro bono basis.
They said: "We are lucky to have an incredible team working for us pro bono, but that can only last so long as the matters intensify.
"The real cause of concern is the potential costs and fines associated with the ruling. They would be a serious problem as we're already barely able to keep things afloat."
They added: "Nothing new for us in that regard though."
Despite the initial fine, the group are confident they can win the case but added the legal battle is "bigger" than their group.
Subset said: "Regardless of the outcome, this whole process was necessary.
"If we believe in something, we're going to fight for and protect it. Even if it doesn't make sense to others and could eventually be to our own detriment."
They added: "This is bigger than us, and so we're leading from the front."
Dublin City Council did not wish to make a comment.
A spokesman said: "The issues raised and questions asked in the e-mail below are the subject of legal proceedings and potential further legal proceedings and therefore Dublin City Council will be making no further comment on these matters at this point in time."
Subset want the red tape around painting a mural to be cut which they say will lead "significant improvements" to Ireland's cities.
They said: "A simplified process for the creation of artwork, similar to the Sydney model.
"This would lead to a significant improvement in our cities visual environments, and their engagement with a wider range of cultural endeavours.
"They encourage people to think about how their cities should look and feel. They also promote citizenship, civic engagement and community participation.
The group added: "Public art is a living reflection and expression of the city and society."
Donations to Subset's GoFundMe for the documentary can be made here.
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