In what sense is the old mans statement that the rioters can find death under the oak tree true?

The old man's statement that the rioters can find death under the oak tree symbolizes the inevitable consequences of their reckless and immoral actions. In their quest for wealth, they betray and kill, ultimately leading to their own demise. The oak tree serves as a grim reminder of fate, illustrating that those who seek to harm others often meet their own end in a similar manner. Thus, it highlights the theme of poetic justice in the story.