A Malian immigrant, identified as 22-year-old Mamadou Gassama, is being compared to "Spiderman" after he heroically scaled the outside of a building in Paris to save a 4-year-old child dangling from the balcony four stories up. Following Gassama's heroic feet, he met with French President Emmanuel Macron, who said Gassama would be granted citizenship to the country. Here's what you need to know.