In Poland bad things happen. Two people use knives in schools. A woman dies in one school. A boy is 15 years old. He does this bad act. He wears a helmet. A camera films the act.
Another attack happens in a city. A young man hurts 9 people. Donald Tusk is the head of the government. He orders checks in all schools. The police check 50.000 schools in the land now.
The police take 76 people. There are cases of crime. Experts look at the internet. They search for bad calls in media. They find no proof for calls.