The French government said on Wednesday it was pausing the use of stun grenades in its policing of student protests, after a 15-year-old boy’s hand was blown off during a clash with riot police, fuelling protesters’ accusations of police brutality. Protests showed no sign of easing, with more than 500 schools closed a day after demonstrations swept across the country, and unions representing high-school students, teachers and other workers planning more marches for Thursday. The wave of...