On March 29, a large demo was held against the installation of a US missile base  in Poland. Early the next morning, a person's  house was raided and 23 people were arrested. Here are some of the details.

A group of people were at an after-party / concert.
They returned back home at 4:30AM. They had been followed by the police.

At about 5:40 they came to the flat. Most of the people were sleeping.