A wave of apparently coordinated bombings hit bakeries and public markets in Baghdad on Wednesday, killing at least 42 people and wounding more than 90, many of them as they rushed to shop during a break in heavy rainstorms, according to the police, residents and medical officials.

The attacks, most of them car bombings, targeted Shiites and Sunnis, reflecting the protracted sectarian violence that has spiked since the American withdrawal in 2011 and raising concerns that Iraq is facing levels of strife not seen for years. […]