Wall Street spent another session buffeted by volatility today, closing mixed after investors wrestled with their fears about the economy but also looked for bargains after two days of selling.

Police have detained 80 people who walked nearly 500 miles from the site of a catastrophic 1984 gas leak in central India to protest today outside the prime minister’s residence in New Dehli, an organiser said.

An Indian firm plans to burn toxic waste from the 1984 Bhopal disaster, the world’s worst industrial accident, despite environmentalists’ objections.

US stocks dropped today, extending investors’ losses for the third straight session and pushing the Dow Jones industrial average below 11,000 for the first time since March 9.