At least 20 people were killed in Nigeria in anti-American riots on Saturday and thousands of demonstrators joined peace marches in London and Berlin.
Nigerian residents said as many as 200 could be dead after some of the most violent anti-American protests in Africa since US air strikes on Afghanistan began. Nigerian authorities issued a shoot-on-sight order and clamped a night curfew on Kano, the biggest city in the mainly Muslim north,
Army tanks criss-crossed the streets to quell riots which followed a pattern of Muslim-Christian clashes that have killed thousands in oil-producing Nigeria over the past two years.
"There is rampant shooting in the streets," said resident Jibrin Idris, who said he was trapped in a building with scores of people in the city's commercial district.
"Churches, mosques and shops are on fire. There is smoke everywhere," he said by telephone.
In London, Muslims and Christians marched side by side in a protest against the bombing of Afghanistan that attracted more than 20,000 people, according to police estimates.
"We're here because there are thousands of people across Britain who know that the bombing of Afghanistan is not going to put an end to terrorism," said Carol Naughton, chairman of the protest organizers, the Campaign for Nuclear Disarmament.
"We need to stop the bombing and go right back to diplomatic ways to end this crisis," she said.
Germany also saw its biggest protest so far against the air strikes, launched a week ago in retaliation for the attacks on the US last month that killed around 5,500 people.
Afghanistan's Taliban rulers, who are sheltering the chief suspect in the attacks, Saudi-born militant Osama bin Laden, estimate that more than 300 people, mainly civilians, have been killed in the raids. There has been no independent confirmation.
Protest organizers said some 30,000 people turned out in Berlin, but police put the figure at about 14,000. Protesters came from some 140 different groups, ranging from far-left Marxist parties to the far-right neo-Nazi NPD party.
"The horror of World War II makes all of us in Germany leery of war," said physician Hannes Wand, 54, at the rally held under blue skies and unusually warm autumn weather.
"I'm against this war because it's not justified and innocent people are being killed and forced to flee their homes."
Police said an estimated 5,000 people protested in the Swiss capital Berne, and about 4,000 in the southwest German city of Stuttgart. Smaller protests were held in other parts of the non-Islamic world, including Australia.
In Nigeria, the army moved tanks into Kano's Sabon Gari market area early on Saturday after Christian churches and mosques were set on fire in rioting on Friday.
Community leaders said rioters killed at least six female school students on their way to take university entrance exams.
Police said they found another two bodies in the street, one hacked by a machete, and a witness said he was seeking refuge in a police station when eight more bodies were brought in.
Up to four people were shot later by soldiers enforcing the shoot on sight measure, witnesses said.
Mike Idika, a leader of the predominantly Christian Igbo community, which accounts for most of city's merchants, said more than 200 people had been injured and sent to hospital. Local residents said the protests were hijacked by hoodlums from the city's army of unemployed youth, who chanted "May God destroy America" and "Americans are terrorists."



