This most important document in American political thought outlines James Madison's reasoning about why a large republic is better than a small one. That means a minority is prejudiced against, easily.
Voters can choose to take the rights of others.
As in Idaho, Mormons were forbidden to vote by a vote of the rest of the people for a period of time. In a large republic, such excesses are turned and prevented more easily. While Mormons dominate in Utah, to get anything done nationally, they must combine with Creoles of Louisiana or African-Americans from Chicago or otherwise to get anything accomplished. In a large republic, the idea of one dominant majority is much less coherent than in a small one. You job as a journalist is to help all views be aired so various factions and interests can combine over time on various issues.