* Hong Kong protesters want to derail extradition bill
* Say it undermines democratic freedoms
* Bill also opposed by some Hong Kong business groups
* HK chief executive vows to press ahead with legislation
By James Pomfret and Greg Torode
HONG KONG, June 11 (Reuters) - Hundreds braved thunderstorms in Hong Kong on Tuesday for a fresh wave of protests against a proposed extradition bill that would allow people to be sent to mainland China for trial, but the Chinese-ruled city’s leader said she would not back down.
Hong Kong Chief Executive Carrie Lam said she would push ahead with the bill despite deep concerns across vast swaths of the Asian financial hub that on Sunday triggered its biggest political demonstration since its handover from British to Chinese rule in 1997.
“When the fugitive extradition bill is passed, Hong Kong will become a ‘useless Hong Kong’,” said Jimmy Sham, convenor of Civil Human Rights Front, the main organiser of Sunday’s demonstration.
“We will be deep in a place where foreign investors are afraid to invest and tourists are afraid to go. Once the ‘Pearl of the Orient’ (it) will become nothing.”
In a rare move, prominent business leaders warned that pushing through the extradition law could undermine investor confidence in Hong Kong and erode its competitive advantages.
The bill, which has generated unusually broad opposition at home and abroad, is due for a second round of debate on Wednesday in the city’s 70-seat Legislative Council. The legislature is controlled by a pro-Beijing majority.
Security was tight around the legislature building, with riot police deployed in some areas. Protesters stood under umbrellas in heavy rain, some singing “Hallelujah”, as police conducted random ID checks.
An online petition has called for 50,000 people to surround the legislature building overnight into Wednesday.
Scores of young passers-by had their bags searched by police and some were detained briefly in a nearby metro station. A police officer on the scene who declined to be named said they were searching for weapons to try to stave off any violence.
The Civil Human Rights Front strongly condemned the searches, saying authorities had made people afraid to participate in peaceful gatherings.
Strikes and transport go-slows were also announced for Wednesday as businesses, students, bus drivers, social workers, teachers, Christian groups and others all vowed to protest, in a last-ditch effort to block the bill.
Britain handed Hong Kong back to China under a “one-country, two-systems” formula, with guarantees that its autonomy and freedoms, including an independent justice system, would be protected.
But many accuse China of extensive meddling, denying democratic reforms, interfering with local elections and of being behind the disappearance of five Hong Kong-based booksellers, starting in 2015, who specialised in works critical of Chinese leaders.
Beijing denies those accusations and official Chinese media this week said “foreign forces’ were trying to hurt China by creating chaos over the extradition bill.
Sunday’s protest rally plunged Hong Kong into political crisis, just as months of pro-democracy “Occupy” demonstrations did in 2014, heaping pressure on Lam’s administration and her official backers in Beijing.
Nearly 2,000 mostly small retail shops, including restaurants, grocery, book and coffee shops, have announced plans to strike, according to an online survey, a rare move in the staunchly capitalist economy.
Eaton HK Hotel, which is owned by Langham Hospitality Investments and operated by Great Eagle Holdings , said it respected workers’ “political stances” and would allow them to rally.
Human rights groups have repeatedly cited the alleged use of torture, arbitrary detentions, forced confessions and problems accessing lawyers in China, where the courts are controlled by the Communist Party, as reasons why the Hong Kong bill should not proceed.
China denies accusations that it tramples on human rights.
Reporting By James Pomfret, Greg Torode, Jessie Pang, Felix Tam, Kane Wu, Vimvam Tong, Thomas Peter, Twinnie Siu; Writing by Anne Marie Roantree; Editing by Gareth Jones