The two incidents, confirmed by police, illustrate in stark terms the increasing brutality of the unrest gripping Iraq, fueling complaints that security forces are unable to contain it.
Violence inside Iraq has accelerated in recent months to levels not seen since 2008, with more than 4,000 people killed since the start of April. The growing unrest — marked by frequent coordinated car bombings and other attacks blamed mostly on al-Qaida's local branch targeting police, the military and often Shiite Muslim areas — is intensifying fears Iraq is heading back toward the widespread Sunni-Shiite sectarian killing that peaked in 2006 and 2007.
Yet another barrage of al-Qaida-claimed explosions struck in and around Baghdad on Wednesday, when attacks killed at least 82 and wounded more than 200.
The mob's immolation of a man believed to be a bomber in Baghdad on that day suggests that at least some Iraqis have had enough and are starting to take matters into their own hands.
In grainy footage taken by cell phone and posted online, dozens of people can be seen watching the man's body burn, many of them filming it with mobile phones. They far outnumber the police, who appear to be trying to control the crowd but do nothing to stop the burning itself.
Saad Maan Ibrahim, an Interior Ministry spokesman, confirmed the incident occurred.