Legislative bodies usually have sober standards of decorum that are intended to quiet passions and favor reasoned deliberation. Many demagogues violate standards of decorum outrageously, to show clearly that they are thumbing their noses at the established order and the genteel ways of the upper class, or simply because they enjoy the attention that it brings. The common people might find the demagogue disgusting, but the demagogue can use the upper class's contempt for him to show that he won't be shamed or intimidated by the powerful.