What To correct: 
Interesting and important topic, and nicely structured, but your really need to know which is your IV and which is your DV. It can’t be an open question which one or the other “racial profiling” will be (though this is actually really two variables–subjects racial identity and whether/to what extent they’re unfairly targeted by police, employers or other on that basis). You mention four control variables, but I only see two–age and ethnicity. But ethnicity is largely the same as race, which it seems is already part of your IV or DV. So there are some basic construction elements that are missing or unclear in this piece.