Sarah writes "A public library patron in Springfield, MO, became loud and belligerent when a librarian refused to help him. The problem? He was speaking to someone else on the cell phone at the time. Dear Abby agrees with her in today's column (about halfway down the page) : 'The librarian was within her rights to take the next person in line if the one in front of her was preoccupied. And if the man was belligerent and intimidating, she was also within her rights to have a security guard escort him out.'"