He had to be forcibly restrained by gardaí. O’Brien had previous convictions for public order offences.
Defence barrister Tara McLoughlin said outside a garda station was “one of the least intelligent places to commit an offence”.
O’Brien came out of the station and bumped into a random passer-by. The accused apologised but the passer-by did not accept this and hit O’Brien.
It was a “random event” and he did try to deal with it correctly before he was hit, Ms McLoughlin said.
Judge John Brennan said if you were going to pick a fight you “don’t do it outside a garda station”. However, he said the accused had a level of culpability as he did not “de-escalate” the situation by walking away.