Supporters defend the practice of racial profiling by emphasizing the crime control model .  They claim that the practice is both efficient and ideal due to utilizing the laws of probability in order to determine one's criminality .  This system focuses on controlling crime with swift judgment, bestowing full discretion on police to handle what they perceive as a threat to society.  The use and support of racial profiling has surged in recent years, namely in North America due to heightened tension and awareness following the events of 9/11 .  As a result, the issue of profiling has created a debate that centers on the values of equality and self-defense .  Supporters uphold the stance that sacrifices must be made in order to maintain national safety, even if it warrants differential treatment .