Why did ma Joad beat up a man with a chicken?

In John Steinbeck's "The Grapes of Wrath," Ma Joad beats up a man with a chicken in a moment of anger and protection. The man is trying to take advantage of the Joad family's vulnerability, and Ma's fierce maternal instincts kick in as she defends her family and their dignity. This act symbolizes her strength and determination in the face of adversity, showcasing her role as the family's backbone during their struggles.