Traders are worried that a march later today in Belfast could affect business on what should be one of the busiest shopping days of the year.
A children's walk, Christmas party and Santa planned by a charity for youngsters with heart disease have already been cancelled.
Ulster Unionist Party leader, Mike Nesbitt MLA, called on protesters to stop now.
Anyone who attacks a police officer, anyone who riots, anyone who engages in illegal street protest, is disrespecting the values of the Union flag.
Stop now. You are losing the argument.
More top news
Dramatic dashcam footage captured the moment a four-year-old girl was left seriously injured after falling out the back of a bus.
Tony Kim, who taught accounting at Pyongyang University of Science and Technology, was detained as he tried to leave the country.
Southern England will start dry and bright, and sunnier, colder weather will arrive in the north later in the day.