sentences:  At a lecture celebrating the release of his book "" in 2003, he critically addressed U.S. Latino Issues and the Latino label or identity.He delves deeply into what exactly defines a nation or culture; their similarities and differences; and what life experiences are necessary to differentiate one ethnocultural group from another.In his book he clearly notes the mistaken trend of describing a large and heterogeneous group like people of Latin American descent in the US under labels like Latino.