2 BOUYID v. BELGIUM JUDGMENT 21 November 2013 a Chamber of that Section declared the application admissible in respect of the complaint under Article 3 of the Convention and the remainder inadmissible, and unanimously found that there had been no violation of Article 3. The Chamber was composed of Mark Villiger, President, Ann Power-Forde, Ganna Yudkivska, André Potocki, Paul Lemmens, Helena Jäderblom and Aleš Pejchal, judges, and Stephen Phillips, Deputy Section Registrar. On 24 January 2014, under Article 43 of the Convention, the applicants requested referral of the case to the Grand Chamber. A panel of the Grand Chamber acceded to this request on 24 March 2014. 5. The composition of the Grand Chamber was decided in accordance with Article 26 §§ 4 and 5 of the Convention and Rule 24. 6. Both the applicants and the Government submitted further observations on the merits (Rule 59 § 1). 7. The non-governmental organisation REDRESS and the Human Rights Centre of the University of Ghent were granted leave to intervene in the written procedure (Article 36 § 2 of the Convention and Rule 44 § 3). 8. A public hearing was held in the Human Rights Building, Strasbourg, on 8 October 2014 (Rule 59 § 3). There appeared before the Court: (a) for the Government Ms I. NIEDLISPACHER, (b) for the applicants Mr C. MARCHAND, Mr Z. CHIHAOUI, Co-Agent; Counsel. The Court heard statements by Mr Marchand, Mr Chihaoui and Ms Niedlispacher, and the replies given by Mr Marchand and Ms Niedlispacher to the questions put by judges. THE FACTS I. THE CIRCUMSTANCES OF THE CASE 9. The applicants were born in 1986 and 1979 respectively and live in Saint-Josse-ten-Noode (a district of the Brussels-Capital region). 10. The applicants are brothers who live with their parents, their brother and two sisters next to the local police station of Saint-Josse-ten-Noode. They both complained that they had been slapped in the face by police