Print California’s new ethnic studies curriculum is being put to an early test in Orange County, where organizers are riling up parents in the Los Alamitos Unified School District to oppose elective coursework and materials they say promote divisive, anti-white rhetoric. “These courses are filled with hate for America and all America stands for,” opponents wrote in a letter to the Los Alamitos community, adding that the curriculum “teaches children that America is based on white supremacy and that white people are racists, even if they don’t know it.” It’s an extreme view in a state that is a national leader in ethnic studies education, but the opposition is gaining a footing in some conservative corners.