Bald knobbers were a group of people who lived in the Ozark Mountains of Missouri a long time ago. They wore masks and carried guns to protect their community from criminals who were causing trouble. They were called "bald" because they would shave their heads to make their masks fit better.
The Bald Knobbers helped keep the peace in their area by patrolling the streets and punishing criminals who were caught breaking the law. They would hold trials and decide what punishment was fair for each person.
Some people were scared of the Bald Knobbers because they had a lot of power and would often take the law into their own hands. Eventually, the government stepped in and made it illegal for them to act as vigilantes.
Today, the name "Bald Knobbers" is still remembered as a part of Missouri's history, but they are no longer active, and the law is now upheld by local police departments.