Questão jurídica principal
Whether the knife attack was justified as self-defence under Art. 15 StGB
Decisão extraída
The use of the knife was not proportionate; at most it was an excessive self-defence response.
Fundamentação extraída
A single unexpected head-butt did not justify a wounding knife stab to the abdomen. In a dangerous-weapon defense, warning or a milder use targeting less vulnerable parts should have been attempted first.