Hong Kong stocks sank 1.18 percent in opening exchanges Monday following a weekend of unrest as pro-democracy demonstrators clashed with police in the financial hub. The Hang Seng Index fell 278.90 points to 23,399.51. The unrest is the most severe since Hong Kong was handed back to China in 1997 and has forced the closure of some of the city's most busy roads, leading to widespread chaos, with several bank branches and schools shut down. Police fired tear gas at protesters fighting for democracy, with tens of thousands of people on the streets to demand Beijing grant the city full universal suffrage. Among the index's banks HSBC was down 0.80 percent, Hang Seng Bank was 1.17 percent lower and Standard Chartered lost 1.33 percent. The stock market was already on a downtrend owing to concerns about the Chinese economy following a string of weak indicators recently. It has lost 6.5 percent since hitting its 2014 high at the start of the month. http://www.thestandard.com.hk/breaking_news_detail... Now the Hang Seng index lost 10%