The battle over Texas textbooks is raging once again. On Tuesday, hundreds of citizens turned out for the first public hearing on the controversial social science materials now under review as part of the state's contentious once-in-a-decade textbook adoption process. During the all-day proceedings, activists and historians pointed out numerous factual errors and complained that the books promoted tea party ideology while mocking affirmative action and downplaying the science linking human activity to climate change.