Book banning or censorship typically involves the removal, suppression, or restriction of certain books or written materials, often due to objections or concerns about their content. People who object to book banning generally do so for several reasons:

1. Freedom of Expression: Many individuals believe in the fundamental principle of freedom of expression, which includes the freedom to read and write without government or institutional interference. They argue that censorship infringes upon this basic right.

2. Diverse Perspectives: Books often explore a wide range of ideas, perspectives, and experiences. Banning books limits access to diverse viewpoints and can hinder intellectual and cultural growth.

3. Educational Value: Books can be valuable educational tools, helping readers learn about different cultures, historical events, and complex issues. Censoring books can limit educational opportunities.

4. Slippery Slope: Some argue that banning one book can set a dangerous precedent, leading to the censorship of more materials and stifling open discourse.

5. Parental Choice: Critics of book banning believe that it should be up to individual parents or guardians to decide what is appropriate for their children to read rather than imposing restrictions on everyone.

6. Intellectual Freedom: Intellectual freedom is a core value in libraries and educational institutions. Banning books contradicts this principle by limiting access to information and ideas.