In Regards to that Video

I work in Bay Plaza in the Bronx, which if any one knows is an area in which a lot of Jamaican and African immigrants live, i have had many opportunities to talk with them and hear what both groups have to say especially towards the other. I have noticed there is a type of hostility they have towards each other. I asked one woman, my Jamaican boss, why that is and she said it is because the Jamaicans are better at making their way in this country than their African counterparts, and yet because of the color of their skin they are still tied in together as African Americans, even though they are not from, or have ever visited the continent. Now what i am thinking is even though yes they did originate from Africa to them Slavery is so far removed from thier view of the world they dont even consider themselves African. But is slavery still fresh enough in their minds that they need things like "the race card"?