Lt. Gov. Dan Patrick speaks during Wednesday's press conference.

Credit: Screenshot / The Texas Senate Lt. Gov. Dan Patrick, during a Wednesday press conference, threatened to take over public school districts that don't remove "obscene books" from their library shelves.

Specifically, the Republican culture warrior vowed to pass legislation that would knock an entire letter grade from school districts' A-F academic accountability ratings if they refuse to remove "over 2,000 titles of filthy, dirty" books from their shelves.