Yes Jim, I agree.

The Traveller you refer to was shot in the back whilst running away. That isn't, by any stretch of the imagination, 'self-defence', it's revenge, pure and simple. The death-penalty no longer exists in the U.K., and when it did exist, it was applied after due process of law, and it was not applicable, in the 20th century at any rate, to acts of burglary.