A 17-year-old male appeared in court on Thursday after being charged with the murder of three girls and the attempted murder of 10 more people in a knife attack at a Taylor Swift-themed dance class, UK prosecutors said. The teenager – who cannot be named due to his age – faces three counts of murder and 10 of attempted murder following the killings Monday in Southport, northwest England. The Crown Prosecution Service (CPS) said it had authorised Merseyside Police to charge the suspect with three counts of murder over the deaths of Bebe King, six, Elsie Dot Stancombe, seven, and Alice Dasilva A…