REFILE-French riots pose law and order dilemma for Hollande

* Riots force security to top of Hollande's agenda

* Left wants a more "community policing" style

* Public see law and order as Left's weak point

PARIS, Aug 16 (Reuters) - President Francois Hollande must

perform a delicate balancing act after riots in the French city

of Amiens, ensuring a tough stance on crime without alienating

left-wing supporters or reviving memories of his hardline

predecessor Nicolas Sarkozy.

Hollande pledged zero tolerance after the two days of unrest

in Amiens left 17 police officers injured and sparked fears of a

repeat of the urban riots which swept France in 2005, in the

first security challenge of his three-month-old presidency.

The restive Fafet neighbourhood in the northern city of

Amiens was calm for a second straight night but some on France's

left voiced unease at the sight of a Socialist government,

elected in May on pledges of helping the poor inhabitants of

urban ghettos, deploying hundreds of riot police there.

"A hundred days after Francois Hollande took office, the

security trap is closing around him and his interior minister,

who are failing to mark their distance from Nicolas Sarkozy,"

the left-leaning daily Liberation said in an editorial.

Political analysts said, however, the government was sending

a clear message that it would not tolerate a repeat of the

violence in a bid to convince voters, who overwhelmingly favour

a hard line on crime, that it is up to the task.

A poll for right-leaning newspaper Le Figaro on Saturday,

before the riots began, showed only 35 percent trusted him on

public safety. Hollande had savaged Sarkozy's tough stance on

delinquency during the campaign for May's presidential runoff.

"The government is trying to strike a balance between

breaking with the traditional Left by being tough on crime while

restoring the community policing which was scrapped under

Sarkozy due to cutbacks," said Stephane Rozes of the CAP

political consultancy.

The Alliance police union said Sarkozy's government cut

around 5,000 police jobs from 2008 to 2012 as it struggled to

rein in the government deficit during the financial crisis.

Interior Minister Manuel Valls pledged on Thursday to roll

back those cuts by adding 500 officers a year from 2013 - one of

Hollande's campaign promises - to improve urban security.

At the same time, Valls carefully distanced himself from

Sarkozy, whose pledge as interior minister in 2005 that he would

sweep the "scum" out of the neighbourhoods with a powerful

Karcher water cannon polarised opinion.

"I have not come here to see them turn the Karcher on this

neighbourhood," Valls said on arriving in Amiens.

RIGHT MUTED

However, Valls' plans to boost policing in 15 priority areas

across France - including the Amiens region - came under

scrutiny after some Fafet residents blamed heavy-handed policing

for sparking the riots.

The first clashes on Sunday took place after officers

aggressively questioned a dozen youths who had gathered to pay

homage to a friend who died in a scooter accident.

France's right-wing UMP opposition has mostly remained

silent, though the right-leaning Le Figaro daily questioned why

no-one had been arrested five days after the violence began.

The first arrests finally came in a pre-dawn raid on

Thursday, when police detained five youths on charges ranging

from arson to robbery, trafficking and incitement to

violence.

Police unions, however, said this was increasingly the norm.

"Sometimes the first priority is to re-establish calm," said

Jean-Claude Delage, secretary general of Alliance.

Thomas Lavielle, an official from the local prefect's

office, said further arrests were expected as police examined

ballistics evidence, DNA traces and video footage to build a

cast-iron case against the rioters.

Local Socialist mayor Gilles Demailly said that rampant

unemployment - running as high as 45 percent in Fafet - was at

the root of the problem.

With France's economy expected to remain weak as the euro

zone crisis drags on and the government pares spending to

control its deficit, analysts said Amiens may not be the last

security test for Hollande.

"The economic crisis and the high level of unemployment in

many neighbourhoods means there is potential, as in other

European countries, for more unrest," Rozes said.

"The issue is not whether the government can prevent this,

but to see whether it can find a way of restoring social

equilibrium in the long term."