US Black Lives Matter protests disrupt airports and shopping

 Protests by the Black Lives Matter group have taken place in the US states of Minnesota and California on one of the busiest retail days of the year. The demonstrators in Minnesota temporarily closed the international airport and interrupted Christmas shopping at the Mall of America. Police said a total of 15 people were arrested at both places, mostly for trespassing or obstructing justice. Protesters are angry over a police shooting of a black man in Minneapolis. Jamar Clark was shot dead last month by officers responding to an assault complaint, in one of a number of recent incidents around the US. Hundreds of people took part in the protest at the mall, one of the largest in North America, where Black Lives Matter organisers promised to congregate in defiance of a judge's warning that the shopping centre's owners could legally block the demonstration.