You may not think the proposal of book banning from public libraries is a very big issue.
But the fact is, Palin proposed it as a course of action she was considering.
Which tells you that she would consider such a course of action.
WHich in turn, directly implies that she is ready to be a dictatrix on moral grounds, in direct contradiction to the spirit and letter of the Constitution and Declaration.
Maybe she should study Constitutional law to become better qualified for the position.