Senegal's opposition has called for more resistance to the court approval of President Abdoulaye Wade's bid to seek a highly disputed third term, after a night of riots in the capital, Dakar. Opposition leaders vowed on Saturday to force the president out of office, threatening to march on the palace in a city reeling from violent riots that left at least one policeman dead, according to local media. The ruling sparked fury in the capital, where protesters clashed with police. Anti-Wade protesters threw stones at police who responded with batons and tear gas after the much-anticipated ruling.