From the research I have heard and seen on the subject, when people communicate with people different than themselves it can both help and hurt trust. The primary factor that I took from the research is that it depend on ethical values. If the two people are different but share ethical values, especially symbolic ones, then relationships tend to improve. If however people have different ethical values, then the results of such meeting tend to create more hostility and distrust. People can generally accept that people have different ethical values only if they don't need to actually see it.