An Australian white supremacist accused of gunning down 51 worshippers last year at two mosques in Christchurch, New Zealand has pleaded guilty to all charges, police said Thursday. At the High Court in Christchurch, Brenton Tarrant admitted to 51 charges of murder, 40 charges of attempted murder and one charge of engaging in a terrorist act, Police Commissioner Mike Bush said in a statement. The 29-year-old had previously denied the ...