In Part 2 Chapter 1 of The Stranger, what would be the overall theme/message in the chapter?

The section cited above serves to illustrate Meursault's increasing existential dispatchment to society. The simple, almost listing manner in which Meursault lists the events which follow the shooting has a matter of fact tone. He is not injecting emotion or remorse into any of his comments. Again, he is completely objective and distanced. As he says in the previous chapter, he could have easily stayed at the house or ended up shooting someone.