- Knife attacks in Poland motivated by glorification of online violence, says Tusk BBC
- Poland: three injured in third stabbing attack on young person in four days Reuters
- Police arrest dozens, check 50,000 schools after two attacks rock Poland CNN
- Polish leader says attacks on schools fueled by glorification of violence online ABC News – Breaking News, Breaking News & Videos
- 15-year-old arrested after attack in Polish school that left 1 dead and 2 injured AP News
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