MANILA, Philippines (AP) — Thousands of Filipino students from a Roman Catholic-run school for girls have joined a global campaign to free more than 200 schoolgirls abducted by Islamic extremists in Nigeria, chanting "bring them back" and urging motorists in the Philippine capital to honk their cars in solidarity. About 4,000 students and nuns of St. Scholastica's College spilled out of their campus Friday, lining a busy Manila street carrying placards that read "Bring Back Our Girls." They thumped their fists in the air as they chanted and handed commuters a statement calling for education for all girls. Extremists from Boko Haram — which means "Western education is sinful" — first abducted more than 200 schoolgirls in Nigeria in April. Witnesses said they took 91 more people in attacks earlier this month.