Please proofread my paragraphs thanks?

Nice writing. Just take out the word single from your first sentence. It implies that each single person has rights, but not married people. Your last sentence is probably a typo, but you need to add the word who "many people who disagree". I would state my thesis as you did, but begin new paragraphs with "As Thomas Jefferson..." and "According to Margaret L. Andersen...", "Does an Affirmative Action...".