Cases under Article 2, paragraph 2 of the ECHR
Deprivation of life shall not be regarded as inflicted in contravention of Article 2 of the ECHR when it results from the use of force which is no more than absolutely necessary:
(a) in defence of any person from unlawful violence;
(b) in order to effect a lawful arrest or to prevent the escape of a person lawfully detained; (c) in action lawfully taken for the purpose of quelling a riot or insurrection.