The suspension of Gomeroi and Ngiyampaa musician and NSW Government employee, Jayden Kitchener-Waters, has ignited concerns about censorship and institutional racism, with community members rallying in solidarity outside NSW Parliament House on Thursday.

Protestors gathered in response to his suspension, which occurred last Tuesday for alleged code-of-conduct breaches; a decision Mr Kitchener-Waters says is an attempt "to silence our voices on genocide, and then trying to stop us from speaking up for what's right".

The rally follows an incident on November 17, when the 25-year-old walked out of a planned performance at the Premier's Public Servants Awards after being told the phrases on his guitar were "too political".

"I offered to write over certain parts of the guitar to sort of hide the expletives, but they still had an issue with the 'No Pride in Genocide'," Mr Kitchener-Waters said.

"They told me that 'No Pride in Genocide' is a statement that's too political and that we can't be seen choosing sides on genocide."

Immediately following the incident, he posted a response on his social media. The next day, he was suspended for allegedly breaching the staff's code of ethics and conduct for the video.

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"I think it's awful for anyone to suggest that there's two sides to genocide, I believe that we should just be able to say that genocide is a bad thing, and that'd be normal, but the Government here doesn't believe that's the case," he told National Indigenous Times on Thursday.

The suspension has been raised in Parliament. Greens upper house member and spokesperson for First Nations Justice & Heritage, Sue Higginson, questioned the Government last week on whether 'No Pride in Genocide' was considered a politically divisive statement - and asked: "If so, what are the sides in support of genocide that the Premier's department is afraid to offend?"

Minister for the Environment and Government leader in the Legislative Council, Penny Sharpe, had responded by referencing the Department's code of conduct, which requires employees not to act "in a manner or make or endorse a comment that would cast doubt on their ability to act impartially, apolitically and professionally".

This response has been met with outrage, with protestors arguing that refusing to acknowledge genocide is in itself a political stance.

"Silence is not a neutral position, and neither is politicising genocide," said Sarah Ibrahim, lawyer and founder of the Racial Justice Centre.

"Absolutely everybody, everybody nationwide, should be appalled at the death of any innocent people, let alone the destruction of the entire infrastructure - all of Gaza's hospital systems, education systems, the death of 20,000 children.

"If nobody is appalled by that, then we have an issue in humanity."

Lawyer Nikolai Hadad said the suspension reflects a broader pattern of institutional racism and censorship within public service.

"This is a really important issue to me as a person concerned about the right of people to speak out against oppression everywhere, and against the silencing of government institutions that we have seen here on colonised land," Mr Hadad said.

"The people who have tried to silence Jayden have done so based on so-called public service values. But if you look at those values in a normal sense of the word, you will realise that actually what he has done is 100 per cent in accordance with them.

"If you're impartial, you can look at the evidence and see that it's a genocide. And if you're ethical and you want to do something about it, and if you're responsible, then you will take steps to comply with the obligation that exists in international law to prevent genocide."

One ex-public servant referenced her own experiences within the Government, reaffirming Mr Hadad's words.

"This has been happening for way too long... so many public servants have been experiencing censorship, intimidation, bullying, and it hasn't been stopped," she said.

"The amount of people I know who've either left or experienced extreme mental health sort of breakdowns and issues because of the workplace culture, the inconsistencies from management and how they're approaching things.

"The tactics to isolate people, not allowing things to be discussed even in the internal channels, where you might be able to find a community of people who can support you culturally... all that kind of conversation was being shut down even within the internal channels.

"So, it's like they just want us to shut up and not talk about it at all, whether it's internal, external to the media - they just don't want us to talk about it."

Attendees also said the Government's response to Mr Kitchener-Waters is particularly alarming, given Australia's own history of violence and the long-standing suppression of First Nations voices.

"I came here in support of Jayden, a First Nations man, a sovereign man who is out here speaking about things that matter," one supporter said.

"Genocide is something all First Nations people would be expressing, and the idea that First Nations people cannot express that is something that we should be worried about."

Another attendee noted the situation reflects the contradictions faced by First Nations people working within the government.

"The idea that Jayden, a First Nations man, whose actual job in the public service is to revitalise language... that in itself should be anti-colonial, and the government should be supporting that," they said.

"And when he says no to genocide, what does that really mean? He's trying to reverse the impacts of colonisation by bringing back language, and he should never be silenced on that.

"I think that that is a true sign of the times, really, that First Nations workers in the language department are facing a loss of their jobs for opposing genocide, which should not be controversial... So I think that's what we all need to keep fighting for."

For now, protestors are seeking accountability from the NSW Government.

"I really hope Chris Minns is put in front of some inquiry about how inconsistently he's been dealing with different communities and different matters," one protestor told National Indigenous Times.

"I am hoping that this is some urgent intervention, and that the cultural safety of non-white people can finally be taken into consideration, because there has been a structural racism issue in the public service for a really long time. So I'm hoping that this will prompt some change."

For Mr Kitchener-Waters, the rally is symbolic of the continued fight against censorship for the First Nations people.

"For years since colonisation, Aboriginal people have been censored. White people have tried to censor us, but we'll keep on fighting, and we'll keep on speaking up for what's right," said Mr Kitchener-Waters.

"I hope that it's another reminder to the Minn's government that we won't be going away until he stands in front of the camera and admits that there's a genocide happening in Gaza right now."