For example in Europe when someone dies somebody always has to go to jail, even if they were defending themselves or responding to a potential threat. A jury could show compassion or empathy. Judges are extremely stoic in that regard.
https://se-legal.de/services/criminal-defense-lawyer/self-de...
The only ones getting a free pass are criminals. When they shoot and kill each other judges usually rule that it was self-defense. Ordinary people...no such luck.
Besides in Europe you always have to use physical violence to kill someone because firearms are illegal.
Please cite the european law that states this.
Self-defence can be a valid justification for manslaughter, at least in the UK.