By Crispian Balmer and Elizabeth Pineau

PARIS, Oct 24 (Reuters) - French security forces fanned out across Paris on Saturday ahead of protests that authorities fear could turn violent, with Interior Minister Laurent Nunez urging police to be "hyper-reactive" against troublemakers and looters.

Soldiers from ‌an anti-terrorism military unit patrolled the Champs-Elysees avenue while police vans circled the Arc de Triomphe, looking to protect some of ‌the capital's most famous sites from any repeat of the unrest that shook France last week.

Nunez has mobilised 70,000 police nationwide for Saturday's demonstrations, 10,000 more than on October 17, when ​a wave of vandalism and looting raised questions about the government's ability to maintain order.

Anger over living costs and strained public services has drawn students, workers and unions onto the streets in recent weeks, but authorities s...