What actions would you take to stand up for your beliefs? Objective 1. To read and understand the main idea in a primary document. 2. To explain the different public attitudes about the U.S.-Mexican War. 3. To understand the concept of Henry David Thoreau’s Civil Disobedience. 4. To explain what they would do to defend their own beliefs. 4. To present their findings to the class and participate in a class discussion. Background The US-Mexican War was highly contested among politicians and civilians. Antebellum Reform and arguments over the expansion of slavery gripped the nation. Those in favo Duration: 60 Minutes.