KHARTOUM: Four people were killed in Sudan on Sunday as protesters launched a civil disobedience campaign against the military after a bloody crackdown on a sit-in demonstration calling for civilian rule. The campaign got underway nearly a week after the assault on demonstrators at the sit-in outside army headquarters in central Khartoum, which followed talks breaking down between protest leaders and military rulers over who should lead a new governing body — a civilian or soldier. Following the call for the campaign of civil disobedience, protesters set about building roadblocks in Khartoum while markets and shops were closed in several other towns and cities.