President Peter Mutharika was sworn in for a second term in Malawi late last month, but opposition protesters are challenging the legitimacy of his recent reelection, based on widespread allegations of vote-rigging. Lilongwe, Malawi’s capital, has been rocked over the past two weeks by steady protests that have included demonstrators storming government buildings to demand that opposition leader Lazarus Chakwera, who finished a close second in the election, be sworn in as president instead.

Last Thursday, police used teargas to disperse a rally outside the headquarters of the opposition Malawi Congress Party, which Chakwera heads. That clash occurred while Chakwera was meeting with the U.S. ambassador in Lilongwe. Some of the tear gas also wafted into the nearby U.S. Embassy, according to The Associated Press. ...