The Muslims were joined by Norway's Prime Minister.
Norway’s prime minister and other politicians have joined Muslim leaders and thousands of other people for a demonstration in Oslo against radical Islamists.
Monday’s rally was an initiative by young Norwegian Muslims who wanted to show a united front against Islamic State militants in Syria and Iraq and their sympathizers in Norway.
Mehtab Afshar, head of the Islamic Council in Norway, told the crowd: “They stand for terrorism, they stand for terror ... and we condemn that in the strongest terms.”
It's a start. But more Muslims in other countries need to be doing this.