Guardian: Denmark may be breaching European law, Danish human rights groups claimed tonight as they called for their government to launch an immediate inquiry after police in Copenhagen used controversial kettling and mass preventative arrest tactics for the third day running. Following the arrest of 68 people on Friday, and 958 yesterday on Saturday, police today arrested 257 demonstrators, “kettling” a section of a march near Osterport station, and as they had done on Saturday, cuffed the …