As a seventh-generation Texan, when I say that I love Texas as much as anybody, I know that means a great deal more than many. For me, it is personally heartbreaking to learn that an ultraconservative group of activists — led, until recently, by a Bryan, TX, dentist — has marshaled curriculum changes to history and civics textbook that will be widely adopted throughout the nation. Texas conservatives are even messing with Texas! The…