Zài zhè chǎng zhèngzhì chǒujù lǐ, tā bànyǎn le yí ge kěxiào de chǒujué.
In this political farce he played the part of a ridiculous buffoon.
Tips
mistakes
角 here means a role, as in 角色 and 主角, not jiǎo 'horn, corner'. The clown is one of the four role types of Chinese opera: 生 male, 旦 female, 净 painted face and 丑 clown.