text:  At a vigil Saturday night, community members demanded justice. France is in an uproar after the far-right's strong showing in parliamentary elections. The BBC's Mark Lowen reports from a tense Paris. There will be a lot of people who will be furious at President Macron for a gamble that has misfired, a trap that perhaps has ensnared himself and indeed France as well, will have huge implications potentially for this country and for the European Union as a whole, and could