Contributed by Jonathan Stevenson / Making deeper sense of some abstract art past its initial visual impact can require extended consideration. Not so much Chakaia Booker’s sculpture, now on view in her solo show “Public Opinion” at David Nolan Gallery. Composed predominantly of exactingly configured pieces of black rubber tires along with wood and metal, the work immediately grips you like a confident advocate, calm and insistent. In Minimum Wage, a shovel entwined in flowing ribbons of rubber appears to struggle to do what it is supposed to do.