Organisers of the march led chants outside Starbucks, Barclays, Axa and Leonardo Hotels.

The author suggested she would use royalties from her books and BBC adaptations to fund the banned group.

The award-winning author said she will donate her earnings from her books and BBC adaptions to support the group.

Hundreds of people attended the event at Belfast City Hall, with a small number displaying posters and placards supporting of Palestine Action.

Limerick native Sinéad Ní Shiacáis travelled to London to join the peaceful protest

Police said she was arrested on suspicion of possession of an article that indicates support for a proscribed organisation.

Belfast West MLA Gerry Carroll called on Executive ministers to ‘speak up for the right to protest’.