The plain people who think--the mechanics, farmers, merchants, workers with head or hand, the men to whom American traditions are dear, who love their country and try to act decently by their neighbors, owe it to themselves to remember that the most damaging blow that can be given popular government is to elect an unworthy and sinister agitator on a platform of violence and hypocrisy.
 Theodore Roosevelt, State of the Union Address. copy citation

Context

“The man who debauches others in order to obtain a high office stands on an evil equality of corruption with the man who debauches others for financial profit; and when hatred is sown the crop which springs up can only be evil. The plain people who think--the mechanics, farmers, merchants, workers with head or hand, the men to whom American traditions are dear, who love their country and try to act decently by their neighbors, owe it to themselves to remember that the most damaging blow that can be given popular government is to elect an unworthy and sinister agitator on a platform of violence and hypocrisy. Whenever such an issue is raised in this country nothing can be gained by flinching from it, for in such case democracy is itself on trial, popular self-government under republican forms is itself on trial.” source