PARIS — Even in normal times Emmanuel Macron needed allies’ help governing France. To get some things done he worked with the traditional right. The center-left helped the French president accomplish others. The challenge was bigger than any a French leader had faced in more than two decades: He had to convince politicians across the country’s national assembly to support even a minor domestic project. Now, governing his already-polarized country has gotten close to impossible for Macron because a suburban police officer stopped a yellow Class A Mercedes and fired one fatal shot into the 17-year-old driver’s chest, setting off six days of tumult across the country. [time-brightcove not-tgx=”true”] Macron’s centrist Renaissance party and its close allies had merely 251 seats out of 577 after Macron won his second five-year term last year with 58% of the votes in a runoff with far-right leader Marine Le Pen. Macron dreamed big despite the close victory.