Apr 15, 2012 10:21pm Email Smaller Fo! nt Text Larger Text | Print (Carolyn Kaster/AP Photo) CARTAGENA, Colombia Before leaving Colombia, President Obama spent some time with the people of Cartagena, participating in a cultural event to recognize the historically marginalized Afro-Colombian communities and to grant the descendents of slaves the formal title to their land. This a historic day, decades, even centuries in the making, Obama said. For generations many of you have lived on these lands, toiled these lands, raised your families on these lands and now, from this day forward, you will at long-last hold title to this land. Standing alongside President Santos of Colombia and singer Shakira in the Plaza de San Pedro, Obama reflected on his own ancestry. Early in my presidency, my family and I visited Ghana in West Africa and we visited the historic Cape Coast Castle and Ill never forget my two young daughters, the descendents of Africans and African-Americans, looking o...