I live in a very segregated city, All the whites live out west, the african-americans live in the northeast, and mexicans live in the southeast. Actually, our city's school district is seperating into 3 seperate districts so even the school's are segregated. There isn't a lot of gang activity, but there is some. There are certain parts i wouldn't go to to late at night, but the media really exagerates.
There is an article in my local paper about a football player that is coming from south-central LA, and he talks about how dangerous it was there. He said he lived 2 blocks from the school, but for protection his parents drove him to school everyday.