1. link between social exclusion and delinquency: you need to look back further most of the kids/teenagers that are excluded come form one parent families, or single mothers who are very young.
2. again I would say that the over representation of blacks in the criminal system is a symptom of an under lying problem and not a direct cause of social exclusion.
3. yes I agree with this statement to some extent. But the marginalisation of British males through being overly represented in low paying manual work is again a symptom of a deeper underlying problem.

…just a point though, you might want to considering fleshing out the initial argument. You could divide ‘blacks’ in to sub-ethnic groups
· Caribbean’s ( Jamaicans , Barbados etc...and the historically low achievements )
· West Africans ( Nigerians, Ghanaians and the relatively high achievements
· North black Africans ( Ethiopians/ somalians: who have achievement levels that are even lower than Caribbean’s . this is mainly due to the fact that many are refugees and often come with many social problems).



It’s a good starting point to look at (areas of urban deprivation). You could look at the awful housing afro-Caribbean families were almost forced to live in ( during the 1980’s, and just prior to the Brixton riots ( see the link below)

Brixton riot (1981 - Wikipedia, the free encyclopedia)

you could also google the “scarman report” on the aftermath of the riots and read up on possible causes.
…you might want to talk about the comparisons between other “visible ethnic groups” ( and by visible I mean any ethnic group of colour Indians /Vietnamese / and of course blacks as opposed to other invisible ethnic groups ( Jews, Bulgarians even white Americans and other white Europeans)

…. But you shouldn’t make the essay/thesis all doom and gloom…
you could talk about steps being taken to combat the often negative image afro-Caribbean’s ( and especially afro Caribbean males have) for example if you follow the link below you will see a recently published top 100 most influential uk blacks, you’ll be pleasantly surprised..

Top 100 'most influential' black people in UK unveiled | 24dash.com - Communities


.......good luck