Do we need to build a fence along our southern border? There is no shortage of people who would have you believe border security is nothing more than racism. It is important to note that a fence isn’t capable of racism. A fence is simply a tool used to prevent movement from one place to another. And if we are concerned with knowing who is entering this country, a border fence is one of the most important tools our border agents have to help us weed out the criminals, drug smugglers, and terrorists.