CRISISBOOM

A police officer, left, filmed a foreign journalist as street cleaners swept water to keep passersby moving and a plain clothes officer, right, watched pedestrians on Sunday along Wangfujing Street in Beijing, where a protest had been called.

BEIJING — Apparently unnerved by an anonymous Internet campaign urging Chinese citizens to emulate protests that have rocked the Middle East, the authorities this week have begun a forceful and carefully targeted clampdown on activities by foreigners that the government deems threatening to Read more…