Caroline Simon editorial intern and senior at the Univeristy of Pennsylvania, writes:  When Charles Murray or Milo Yiannopoulos visit a college campus, administrators don’t just worry about the effect that inflammatory speech might have on their students. They aren’t only concerned about being swept up in the higher education free speech debate, or playing host to a scandal that could taint their school’s reputation for months. There’s also the cost — which can climb into the millions of dollars.