Complex sentence: Race relations have caused lingering issues in the city of Utica; a 2015 study published in PLOS One found that the Utica area contained the second highest level of racist Google search queries in the United States.
Split into simpler sentences: Race relations have caused lingering issues in the city of Utica. A 2015 study published in PLOS One found that the Utica area contained the second highest level of racist Google search queries in the United States.