Yes, your policy is much more effecient than ours.
A Swedish example: the 16-year olds Diar Mahmoud and Hasan Kibar assault a pensioner in Kortedala, Gothenburg, punching him until he falls and showering him with kicks while he's lying down. The pensioner has become blind on one eye and suffers from memory loss from brain damage caused by the assault. Kibar and Mahmoud receives a sentence of 140 hours community service (
http://www.gp.se/nyheter/goteborg/1....t-ar-konstigt-).
A Danish example: Three 16-year-olds rob a 15 year-old, taking his phone (
http://www.sydsvenskan.se/varlden/da...os-ransiffror/). Two of the robbers get 6 months imprisonment, the 3rd one gets 2,5 years in prison, and will be kicked out of the country and is banned from Denmark for life.
The result? When Malmö had >900 robberies, Copenhagen had only 400. And Malmö has a population of only 330000, less than half the population of Copenhagen.
The article about Malmö vs Copenhagen also states that 79% of Copenhagen's youth criminals are immigrants. Statistics for Sweden are kept secret (guess what that means...). So, the majority of immigrants aren't criminals, but the majority of criminals are immigrants.