The nazi start to take over in chapter 4. Also, they shot a jew after curfew when they were burning the synagogue. The nazi brek in and the reaction was they move in a pigeon coop on the roof. In chapter 8 he was coming home from a job and saw his parents in a line of jew going to a camp.
In 14 a kapo took them in the mine and said if they run they be lost. Trzebinia their new job is to move rook back froth.