Redlining, subprime mortgages sold in minority and immigrant neighborhoods, higher interest rates on car loans – black Americans have reason to distrust the financial system. This spills over into their retirement planning, specifically their relationships with financial planners and how much they save, concludes a study in The Journal of Personal Finance. Among the findings is that blacks and, to a lesser extent, Latinos have difficulty trusting planners. Past research shows trust can play an important role in financial decisions. People who trust the stock market, for example, are more likely to invest in stocks. But black Americans start out with generally lower trust levels: nearly half reported “low trust,” compared with only about one-quarter of whites, according to t…