Protesters on Thursday broke up a session of Libya’s Parliament in Tripoli, disrupting a vote of confidence on a new cabinet and demanding representation for their city. The protesters, from the city of Zawiya, stormed the chamber, chanting slogans against the recently elected prime minister, Mustafa Abushagur. Lawmakers left the floor, saying they would not vote under pressure, said a parliamentary spokesman, Omar Humidan. The demonstration reflects the divisive makeup of Libya, where rival groups and tribes all demand government representation.