In Act 1, Scene 1 of the play two tribunes, Flavius and Murellus, are going around the streets pulling down decorations that have been hung on Caesar's statues in his honor. Their confrontation with a large group of plebians dramatizes the growing popularity of Caesar and a growing resentment and opposition to him among some of the aristocracy. Flavius compares the scarves, or ornaments, or decorations they are pulling down to feathers being plucked from a bird in order to keep it from flying too high, i.e., to keep Caesar from aspiring to become a monarch.
In Act 1, Scene 2, Casca tells Cassius and Brutus: "I could tell you more news, too. Murellus and Flavius, for pulling scarves off Caesar's images, are put to silence" (deprived of their tribuneships and exiled).