I think the answer is very easy to explain, the solution, well...lol
Before I post this I would like to say, I am not racist in anyway; nor do I hold any prejudices against any race.
If you look at all the teenagers that have been gunned dead, the area's in which they have been killed, and the community's where they originate from, you will find out that they're most likely of Asian or African descendant.
Basically, there ancestors are coming into this country, giving birth to children, and then not bringing them up right, thus leading to a bad community of wild, uncontrollable and pschycologically damaged youths.
People need to realise that the people who are giving Britain a bad name, their ancestors do not originate from Britain. I place the blame on their ancestors for making terrible communities in which innocent people have to live in today.