Three Hong Kong activists plead guilty to taking part in unauthorised rally

Police officers escort a prison van carrying Hong Kong pro-democracy activist Andy Li as it is leaving court in Hong Kong (Kin Cheung/AP)

Three veteran Hong Kong pro-democracy activists, including well-known publisher Jimmy Lai, pleaded guilty to taking part in an unauthorised rally that led to violence between police and participants.

The charges carry prison terms of up to five years.