Raj Jandoo appeared at Edinburgh Sheriff Court last month charged with the offences and pled not guilty.
In 2000, Jandoo, now 56, was asked by former Lord Advocate Colin Boyd to investigate the way the authorities dealt with the family of murdered Indian waiter Surjit Singh Chhokar, right.
He was also deputy chairman of the previous Scottish Executive's Stephen Lawrence Inquiry Steering Group.
Despite a successful career, it is understood he has not practised as an advocate for more than a year.
It can now be revealed Jandoo was charged with the two offences following an incident in Edinburgh on July 31.
His trial is scheduled for November.
Jandoo previously hit the headlines in 2005, when he was fined £2500 for endangering an aircraft. He was found guilty of alarming passengers on the flight to Lewis by making bomb references.
Jandoo was sequestrated earlier this year, owing debtors more than £141,000.
He was listed as having assets of £135.42.
A Police Scotland spokesperson said: "A 56-year-old man has been charged with breach of the peace and assault following an incident on the evening of July 31 at an address in Millar Crescent, Edinburgh. He made a first appearance in court on August 22."
Jandoo did not return calls.