During the incident, a number of flags and banners were damaged overnight at the camp at Twaddell Avenue.
The damage was reported just after 7.30 am.
The PSNI said officers subsequently arrested two men aged 21 and 22, and a 20-year-old woman for questioning about the attack.
They have been charged with criminal damage and provocative conduct.
The woman has also been charged with theft.
All three are due to appear before Belfast Magistrates’ Court on Wednesday.
Loyalists set up a protest camp at Twaddell Avenue after the Parades Commission banned an Orange Order feeder parade past the Ardoyne shop fronts.