Describe the incident that takes place outside of Alex's house in Chapter 12.

In Chapter 12, Alex is at home when he hears voices outside of his house. He sees Milo arguing with a stranger and then fighting them. The stranger yells out to Alex that Milo is committing police brutality. At this point, Milo handcuffs the man and finds a knife and gun on him. The man claims the weapons are registered, but he is still arrested by police.