Student protests in France spread to more cities

French authorities suspended the use of stun grenades Wednesday after a teenager lost his hand during clashes with police, as demonstrations over school conditions spread to more than 40 cities. Protesters’ weekslong blockade of schools is the most visible aspect of a multifaceted national crisis, as public workers strike, bond yields rise to multidecade highs , and France’s traditional parties reckon with the far-right. But one proximate trigger of public discontent may have been overlooked:…