Authorities have vowed to crack down on workers who went on a violent rampage at a Taiwanese-run iPhone factory in southern India over allegations of unpaid wages and exploitation, with 100 people arrested so far. Hundreds of workers rioted at Wistron Infocomm Manufacturing's facility on the outskirts of Bangalore, India's IT hub, on Saturday, with videos of the purported violence showing glass panels smashed with rods and cars flipped on their side.