More than 100,000 people poured into the streets of Belarus’ capital Minsk, sparking a show of force and mass detentions by riot police on Sunday in one of the largest in a string of demonstrations aimed at keeping pressure on President Alexander Lukashenko.
In the month since a vote maintained Mr. Lukashenko’s hold on the presidency—a ballot his critics say was neither free nor fair—protesters have proven their staying power, and Sunday’s demonstrations were among the most energetic yet, but the protests haven’t forced him…