Well, there's a lot of back story that's relevant here. First of all, he's only the interim Chief. The search to find a permanent Chief has been postponed, however, pending an investigation into allegations by a fired former Captain in the department that Chief Santiago tried to involve him in a plot to frame the Assistant City Manager for illegal gun and cocaine possession.
At the same time, the Columbia Police Department is under a lot of scrutiny right now over the safety of the popular Five Points district, which is one of the main commercial areas in the city, and is a popular nighttime hangout for students of the University of South Carolina. Crime has been greatly increasing there over the past few years, and a few weeks ago a student was shot by a stray bullet while waiting for a cab. The President of the university declared Five Points unsafe after midnight, and the school has been working with the Police Department and the County Sheriff's Department to figure out how to deal with the situation in Five Points. So tensions are very high.