new jersey, Memphis

Jewish Ghettoes

Black Ghettoes

Amish Ghettoes

The phrase "act black" is loaded with the association of blacks with ghettos, but not all blacks live in a ghetto and not all people in ghettos are black. Thus, what you are really asking is, "Why do people who live in a ghetto act like people who live in a ghetto?"

there are actually more dicent working,middle,and upper class black communities than ghettos

Ghettos are dating back to 15th centuries and Europe. They definitely weren't what they are today, but they were like isolated neighbourhoods. There were Jewish ghettos, where Jewish traders lived and worked, all kinds of them. They didn't start as scary black neighbourhoods, but as normal parts of cities.