Well last year we had the Katrina evacuees come over and integrate (for the most part). By far most of these are fine people trying to start their life over and get on their feet, like a couple who moved in next door to me (really nice folks)...but...of course a lot of the criminal/gang element came too. Houston's murder rate jumped 20% in 6 months. Also, being a border state and Houston being a sanctuary city, there's always the illegal aliens flowing in, but unfortunately that's nothing new.