Necessary in a democratic society
‘(a) The test of “necessity in a democratic society” requires the Court to determine whether the interference corresponded to a pressing social need. The Contracting States have a certain margin of appreciation in assessing whether such a need exists, but it goes hand in hand with European supervision, embracing both the legislation and the decisions applying it, even those delivered by independent courts. The Court is therefore empowered to give the final ruling on whether a “restriction” is reconcilable with freedom of expression as protected by Article 10.
(b) The Court’s task in exercising its supervisory function is not to take the place of the competent domestic courts but rather to review under Article 10 the decisions they have taken pursuant to their power of appreciation. This does not mean that the supervision is limited to ascertaining whether the respondent State exercised its discretion reasonably, carefully or in good faith; what the Court has to do is to look at the interference complained of in the light of the case as a whole, including the content of the statements held against the applicant and the context in which he or she has made them.
(c) In particular, the Court must determine whether the reasons adduced by the national authorities to justify the interference were relevant and sufficient and whether the measure taken was proportionate to the legitimate aims pursued. In doing so, the Court has to satisfy itself that the national authorities, basing themselves on an acceptable assessment of the relevant facts, applied standards which were in conformity with the principles embodied in Article 10.
(d) The Court must also ascertain whether the domestic authorities struck a fair balance between the protection of freedom of expression as enshrined in Article 10 and the protection of the reputation of those against whom allegations have been made, a right which, as an aspect of private life, is protected by Article 8 of the Convention.’ Bozhkov v Bulgaria  ECHR 700 (an Article 10 case.)
6th Edition » | Appendix