what are some important themes in chapter 4?

I think that violence and survival are both themes in this chapter. Anti-Semitic violence is increasing, and the Nazis are beginning to send the Jews to the concentration camps. In this chapter, Vladek's father and Anja's grandparents are all sent to Auschwitz. At the same time, Vladek is beginning to show the resourcefulness and thrift that will help to see him safely through the war.