Mayor White has said that the increase (which has been huge) in murders is due to Katrina NOLAs. Every Houstonian that hasn’t been living under a rock knows that NOLAs have been committing quite a lot of crime in certain areas of town (particularly the southside in low-income wards). White is right on point with his statements, and the facts back him up. Katrina wasn’t only terrible for NOLA, but for Houston as well. Read more: Houston mayor blames evacuees for murder total