On Saturday, around 60 men dressed in black rallied at a protest organised by the Neo-Nazi group National Socialist Network at NSW Parliament House, where a banner that read "Abolish the Jewish lobby" was displayed.

Unusually, the men were unmasked, allowing journalists to identify them and discover details about their lives from social media.

One of the men photographed standing in the front row was Matthew Gruter, who moved from South Africa to Australia in 2022.

An online job profile for Mr Gruter lists his employer as multinational design, engineering and consulting firm Aurecon. He is listed as a senior civil engineer — water and wastewater.

A spokesman for Aurecon told ABC News Verify the company was "looking into the matter", but did not confirm whether Mr Gruter was employed by

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