Around the world Muslims have been continuing to vent their fury over caricatures of the Prophet Mohammad published in European newspapers. Norwegian UN troops were among the latest targets of protest.Four people are reported to have died and several others were wounded when police opened fire after petrol bombs and stones were thrown at the Norwegian camp.Across the border in Pakistan thousands of people attended rallies to express their anger. The Danish embassy in Tehran, which was attacked by angry crowds yesterday, has been targetted again. Denmark has protested to Iran and demanded more protection for diplomatic staff.The Danish newspaper which first published the depictions said they were intended to test the boundaries of free speech. In recent days there have been similar demonstrations in numerous countries where Islam is the dominant religion.