A man has been left with a broken arm after an alleged hate crime in south Sydney.

Kurt Johnson and his husband Adrian Kalaiziovski stepped out of an Uber with a group of friends in Redfern about 10.30pm on Sunday when they were allegedly verbally abused by a man.

'He called us f***ots for a good five minutes and continued to taunt us and antagonise us,' Mr Johnson said.

A man has been left with a broken arm after an alleged hate crime in south Sydney

Kurt Johnson and his husband Adrian Kalaiziovski stepped out of an Uber with a group of friends in Redfern about 10.30pm on Sunday when they were allegedly verbally abused

Mr Johnson took to Facebook in an attempt to identify the alleged attacker, who was wearing a backwards cap and a Wests Tigers rugby league jersey.

'As soon as the onlookers and surrounding spectators of the altercation had dispersed and we had walked away from him, this ''hero'' came around the corner looking to start a fight by asking: ''One of you f***ots got a lighter?''.'

After this comment a scuffle broke out and Mr Kalaiziovski suffered a broken forearm.

The break was so bad he is now awaiting surgery, as his arm requires pins to hold it together.

'I can't believe that he was the victim of a hate crime in 2018,' Mr Johnson said.

'I'm still at a loss for words. We are fine and Adrian is in great hands with the doctors and nurses at [Royal Prince Alfred Hospital].'

A New South Wales Police spokeswoman told Daily Mail Australia they are investigating an alleged assault in Redfern with a 'possible motivation of homophobic bias'.

'Just after 10.30pm, emergency services were called to Renwick Street, after reports of an assault.

A New South Wales Police spokeswoman told Daily Mail Australia they are investigating an alleged assault on Renwick Street in Redfern (pictured)

'Police have been told a 25-year-old man had been assaulted following an argument with another man.'

Officers from Redfern Police Area Command attended and launched an investigation into the incident.

Police said they would like to speak to a man they believe can assist the investigation.

He is described as being of Caucasian appearance, aged about 30-years-old, about 175cm tall and of a medium build.

He has short, light brown hair and a beard.

'NSW Police treats all matters of violence extremely seriously, including bias crimes motivated by sexuality or gender,' the spokeswoman said.