PARIS (AP) – Hundreds of demonstrators divided over the Middle East conflict battled in Paris on Sunday during a march against anti-Semitism, attacking journalists and stabbing a police officer before police dispersed them with tear gas.

The clash at the historic Place de la Bastille occurred on the sidelines of a march by 50,000 people protesting a wave of attacks on Jewish schools, cemeteries and synagogues in France amid escalating violence in the Middle East.

Hours after the clash, four gasoline bombs were thrown at the synagogue in La Corneuve, a working class suburb north of Paris. The outside walls were blackened, but there was no damage or injuries reported. Two other synagogues in France reported similar weekend attacks.

Violence also was reported at pro-Israeli marches in other French cities.

Pro-Palestinian demonstrations also were held throughout Europe on Sunday. In Belgium, at least 10,000 marched through the capital of Brussels, burning American flags close to the U.S. embassy and yelling “Sharon-Bush: murderers.” About 5,000 people staged a peaceful rally against Israel in Goteborg, Sweden’s second-largest city.

Several hundred pro-Israel militants and as many as 500 counter-demonstrators were involved in the fighting in Paris, police said. About 1,500 police and scores of anti-riot vehicles were deployed, and police fired tear gas into the crowd. One officer was stabbed in the stomach, police said.

One group of militants attacked journalists and smashed their equipment. An Associated Press Television News cameraman was among those.