The full power of Lorraine Hansberry’s seminal A Raisin in the Sun is on view at the Public, though sometimes it is at odds with the flourishes director Robert O’Hara has added into the proceedings, some of which render implicit understandings insultingly explicit. As a $10,000 insurance payment offers a blessed windfall for the members of the Younger family, the differing opinions on how to spend it and what lies ahead threaten to split the family apart. But performances from Francois Battise, Paige Gilbert, Mandi Masden, and Tonya Pinkins are all to be heralded.