In a class action civil rights trial, elected Arizona sheriff Joe Arpaio and his office are accused of engaging in a pattern of discriminatory policing. As their first witness, the plaintiffs' lawyers called Ralph Taylor, a criminal justice professor at Temple. He had been asked to investigate whether people with Hispanic names were more likely to be stopped in traffic by Arpaio's deputies. During four hours of testimony, Taylor concluded that they were, and that stops involving people with Hispanic names lasted, on average, two minutes longer than stops of others.