They spoke through an interpreter in Romanian to confirm their names and ages.
Their solicitor said they would be denying the charges.
A peaceful protest was held on Monday 9 June, but after it dispersed rioting broke out.
A number of nights of violence then followed in which 64 police officers were injured.
In a statement on Friday night, a PSNI spokesperson said “anyone who can assist in identifying these individuals should contact us on 101, or directly on 02890922815”.