Well, I live in London, we get a lot of so called "gangsters", and then there is the normal guys, who talk slang, but don't claim to be gangsters, people act like gangsters to show off towards girls, most of the time, the good looking girls are the bad ones, who like "bad" boys, so, this is what "gangsters" do...
1: Low Batty: Pulling your bottoms half way.
2: Slang
3: Act Tough
4: Make Fun Of Others To Show Off
And this is what a normal guy, if you get what I mean, does:
1: Wear's baggy clothes, or normal clothes.
2: Talks Slang.
3: Dosen't Act Tough, sometimes for a joke yes.
4: Makes More Friends Then Enimies
Sometimes, when me and my friends are just talking, we joke around, we never intend to show off towards girls, I'll give you a example, the other day, I was playing Table Tennis against one the so called "Gangsters", then one of the "bad" girls, came up and took the ball and said, I'll play with my hand aginast me, then when she throwed the ball to me, I picked it up and continued playing, she says to me "I think your scared of girls", the truth is, I don't really want to interact with these girls, as sexy as they might be, I have many friends as girls, but its the right ones, I've had experience "trying" to be one of them so called "gangsters", just didn't suit me, because I reliased it was stupid, this was around 2007.
As for rappers, rappers are trying to sell records in these times, but if you want a rapper who was a real thug...
Tupac, he rapped from his heart, because he actually lived in the life style this times rappers rap about.
I listen to rap, hip-hop, if anyone says that only gangsters listen to rap/hip-hop, they are wrong, I just enjoy listenting to this type of music like other people enjoy other styles of music.