Marine Le Pen's party mired in Holocaust denial allegations, again

France's troubled wartime past is taking centre stage in the presidential race as centrist Emmanuel Macron visits a Nazi massacre site and Marine Le Pen's far-right party suffers a new blow over alleged Holocaust denial.

The two candidates facing a May 7 run-off offer starkly different visions of France's future - Mr Macron's embrace of a globalised, diverse nation within an open-bordered Europe contrasts with Ms Le Pen's protectionist, tightly policed France independent of the EU.