Your analogy is an epic fail. Why shouldnt they hold on to african culture? It gives them a sense of belonging which we all need. Am kenyan, and i have many black american friends who hold on to african culture including my husband. I think he is more kenyan than me lol.
Try not yet uhuru by oginga odinga, anybook by ngugi wa thiongo, a book called siku njema i think they have the english translation its a good book or wangari maathai autobiography or kiu it should also have an english translation. Am kenyan so i only know of kenyan authors.