Legitimate self-defense: a legally justified defensive act carried out to protect oneself or others from unlawful attack, accepted as lawful when certain conditions are met.
被告の行為は正当防衛に当たるとして無罪になった。
The defendant's actions were deemed legitimate self-defense, and he was acquitted.
正当防衛が成立するには、必要性や相当性が問題となる。
For self-defense to be justified, questions of necessity and proportionality arise.
警察は当該行為が正当防衛に該当するかを慎重に調べている。
The police are carefully investigating whether the act qualifies as legitimate self-defense.