Violation of Article 11 - Freedom of assembly and association (Article 11-1 - Freedom of peaceful assembly);Violation of Article 6+6-3 - Right to a fair trial (Article 6 - Administrative proceedings;Article 6-1 - Fair hearing) (Article 6 - Right to a fair trial;Article 6-3 - Rights of defence);Violation of Article 5 - Right to liberty and security (Article 5-1 - Lawful arrest or detention)
Same source, country, and finding where possible.