My son lived in Houston for a few years. Now he’s in Fort Worth.
He said what you said... that a lot of New Orleans bad actors moved to Dallas after Katrina and stayed. He also said that Hurricane Harvey was no joke either, with rising water on all sides.
Our son was taking classes at a junior college in Rancho Cucamonga and he mentioned that after Katrina a lot of bad actors moved to Houston from Nawlins. A young black girl got really angry with him and told him off. He was only telling the truth and he did not mention skin color! Truth hurts...