229_19 interference 19. The Court notes that in the case of Karaçay v. Turkey (no. 6615/03, 27 March 2007), which raised issues similar to those in the present case, it observed that the sanction complained of, although very light, had been such as to dissuade trade union members from legitimate participation in strikes or other trade union actions to defend the interests of their members. Accordingly it found that the warning given to the applicant had not been necessary in a democratic society and there had been a breach of applicant’s right to freedom to demonstrate (ibid § 37; see mutadis mutandis Kaya and Seyhan v. Turkey, no. 30946/04, § 30, 15 September 2009; Şişman and Others v. Turkey, no. 1305/05, § 34, 27 September 2011; Küçükbalaban and Kutlu v. Turkey, nos. 29764/09 and 36297/09, § 37, 24 March 2015; and Dedecan and Ok v. Turkey, nos. 22685/09 and 39472/09, § 38, 22 September 2015).