Tension over immigration and the integration of Muslims has come to the fore in Australia this weekend as rival groups demonstrated.<br /><br /> The most heated exchanges came on Saturday as nationalists held a rally in Melbourne.<br /><br /> The group Reclaim Australia, which organised protests in around a dozen cities, argues the country’s way of life is under threat and that Muslim migrants should integrate better. It denies being racist.<br /><br /> The United Patriots Front, also present in Melbourne, opposes what it calls “left wing treason and the spread of Islamism”. <br /><br /> They were confronted by the Coalition against Racism and Fascism which describes Reclaim Australia as a “far-right fascist group”, the counter-demonstrators denouncing “Islamophobia”. <br /><br /> Clashes followed as police used pepper spray to keep the rival demonstrators apart. At least four people were arrested.<br /><br /> One arrest was reported at a similar rally in Adelaide. On Sunday five people were held in Sydney.<br /><br /> Fears of Australian Muslims becomin
