I found this fascinating video presentation by Harvard University on book banning in America. Of course, book banning is nothing new; it has existed for centuries. The first book ban in the United States occurred in 1637 in Quincy, Massachusetts.
“Knowledge without action is like hoarding precious metals, a vain and foolish thing. Knowledge is like wealth, intended for use. Those who violate the universal law of USE conflict with natural forces.” Ancient African Proverbs