64-year-old Eritrean migrant groped 20-year-old American woman's buttocks on train station escalator. Woman fought back initially in underground passage. She pulled pocket knife and stabbed him in heart during escalation. Migrant collapsed and died on spot. Woman fled by train then texted friend she probably killed someone. She later turned herself in to police. Court ruled her actions exceeded justified self-defense. Court said she became aggressor by actively pursuing migrant. She got 2-year suspended juvenile sentence. She must do 500 hours community service. She must attend anti-drug counseling sessions. No appeal planned. Surveillance video and witnesses confirmed initial grope. Migrant had history of similar sexual molestation incidents. Court acknowledged his problematic past behavior. Court still deemed her reaction disproportionate.