Grigny isn’t often in the news for good reasons. The poorest city in France, this banlieue south of Paris is marked by massive unemployment and abandoned housing estates. For much of French media, Grigny is the very image of a “no-go zone”: one of its sons, Amedy Coulibaly, murdered four people at a Kosher supermarket in the 2015 terrorist attacks.

Yet there is also a fight to save the city from its plight — led by local mayor Philippe Rio, a member of the French Communist Party. In 2017, he organized the “Appeal from Grigny,” signed by hundreds of other mayors calling for investment in the banlieues. His innovative social programs and a COVID response based on locally issued emergency food vouchers this year saw him handed the biennial “best mayor in the world” award.

The prize given by the World Mayor Foundation hadn’t gone to a Communist before (and even this time around it was co-awarded to Rotterdam’s mayor Ahmed Aboutaleb, a member of the Dutch Labour Party). But Philippe Rio’s administration has also had a wider impact in his homeland, especially through its lifelong education programs and its success in geothermal energy production, which has slashed residents’ bills.