What is the fine-grained topic of the following text: This “motivation” would become the signature of Cobas’s mature work, even though in the 1970s cultural authorities perceived Afro-Cuban popular religions as obscurantist relics that were basically incompatible with a new, modern, and technically sophisticated socialist society. Only return the topic.
Cobas's work and perception of Afro-Cuban religions in the 1970s socialist society.