“We don’t want that filth in Oklahoma?” I can not see the difference between this expression and “We don’t want those sorts of people in Oklahoma.” “Filth” directly references a ‘nonbinary’ teen. Do you think perhaps he was referring to the murderer and was just misunderstood? Holy shit! Some asshole really has his priorities backward. Never mind the asshole(s) that murdered the teen, we don’t want teens like that in Oklahoma.
What’s the old saying? “To get good people to do awful things, it takes religion.”