A man who joined Union flag protesters heading for Alliance leader David Ford's constituency office has been convicted of blocking traffic.
William Robinson denied a charge of wilful obstruction during the early days of the dispute.
But a judge at Belfast Magistrates Court found him guilty, partially based on his own admission of having moved on to the road in Glengormley, Co Antrim.
Robinson (27), of Derrycoole Way, Newtownabbey, was fined £150.
The court heard how up to 40 people protesting over the decision to restrict flying of the Union flag at Belfast City Hall had attempted to get to Mr Ford's Carnmoney Road office on December 6 last year.
A PSNI chief inspector in charge of the public order operation said some of the crowd were masked, chanting and staging a sit-down.
District Judge Mervyn Bates rejected an argument that there had been no intentional offence.