premise: I would agree. And I also agree that most police officers, of course, are doing a good job and hate this practice also. I talked to an African-American police officer in Springfield, Massachusetts not long ago who raised this question and said that in his opinion one of the biggest solutions is in the training.
hypothesis: Springfield, Massachusetts has mainly white cops
reason: It's impossible to know based on the statement if Springfield, Massachusetts has mainly white cops in its police force.