LONDON — The British government said Friday it has no plans to change a law barring young people from being imprisoned for life, despite widespread demands for the teenage killer of three young girls to die behind bars. Axel Rudakubana, 18, was sentenced to serve at least 52 years for a stabbing rampage at a Taylor Swift-themed dance class.

A teenager who stabbed three young girls to death at a Taylor Swift-themed dance class in England was sentenced Thursday to more than 50 years in prison for what a judge called “the most extreme, shocking and exceptionally serious crime.

Axel Rudakubana, 18, was sentenced to 52 years in prison for killing three young girls and injuring 10 others at a Taylor Swift-themed dance class in England. The attack, which took place in Southport during a summer vacation dance class,