An architect punched a man in the face in an unprovoked attack in Belfast city centre, a court heard today.
Peter Logan was given a five month suspended jail sentence for attacking the victim and then running off.
The 45-year-old also lashed out at police during attempts to retrain him.
Logan, of Oakland Avenue, Belfast, faced charges of assault, assault on police and resisting arrest.
He was detained following the incident in the High Street area of the city on August 10.
A member of the public said Logan had punched him on the nose, leaving it swollen and bloody.
Defence lawyer Brendan Blaney told Belfast Magistrates' Court his client was "deeply ashamed" at what had happened.
"He was in the city centre that afternoon in a completely incoherent state," the solicitor said.
"He perceived this man had bumped into him... and he lashed out."
After Logan was taken into custody police had to wait nearly seven hours before he was fit to be spoken to, the court heard.
Mr Blaney described the defendant as a professional man who only started drinking heavily in the past two years.
The court heard Logan has worked on specialist school projects on both sides of the Irish border.
District Judge Rosie Watters said a report compiled on him was "depressing".
She also told him: "You go and punch a stranger in the street and keep on going."
But after being told of his efforts to get medical treatment the judge decided to suspend the five-month sentence for two years.
She added: "I will leave something hanging over your head, but it's shocking, your behaviour."