We have to be conscious of how a person gets to be selected to be pulled over as opposed to not being pulled over by the police for driving offenses. In over 30 years of EEO law, the pattern that I have seen is one of unequal enforcement. This pattern consists of a true assertion that a person has violated some law, code, work rule, but it leaves behind the amounts of other people who commit the same exact violation without being pulled over, charged, etc. even though they committed the very same violation. One chief thing that is noteworthy is the rejection of comparative evidence; the comparison of the treatment of one person who commits an a given infraction to the treatment of another person who commits the very same infraction.
I have a number of problems with this.
First, you talk about two people being treated differently given the same infraction.
Are you including in that claim, how the people react to being stopped for the infraction? Because I've seen videos of people being stopped for the exact same offenses that I have been stopped for and treated differently than I was treated. However it was right for them to be treated differently, because they reacted differently.
When I have been stopped, I have treated the officers with complete respect. I have obeyed every single command given to me, no matter what it was, or how arbitrary it was. I answer every single question without comment or complaint.
I see videos of people pulled over for the same thing, and they are responding with hatred and anger. They taunt the police. They argue with the police. They cuss at the police.
When you do these things, it is only natural the officer is going to react like any human does to a provocation.
As for the rates at which people in certain communities are pulled over by police... are you account for the fact the police are more likely to patrol in areas of high crime? Are you accounting for the fact that people may match the description of criminals, in that area of patrol?
I think it is well established that areas with higher levels of minority population tend to have higher crime. Equally, people who commit those crimes are more likely to be in those areas.
Let me give you an example:
Growing up, I lived in a upper-middle class community. Crime was exceptionally low. Typical months, involved someone spray painting a fence, or shoplifting a candy bar at the local store.
Compare that to the area where my first apartment was, where crime was high. Stolen car stereos, breaking and entering, armed robbery at the local quick-mart.
Which area do you think are more police patrolling? Obviously the second, not the first.
Which area do you think police caught more traffic violations? Obviously the second area, not the first.
Why is that? Because of discrimination, or simply because there were far more patrols in the area that had more crime?
In the upper middle class community I grew up in, seeing a police car was about as rare as seeing a rabbit. A few times a year, maybe.
In the poorer and more crime prone area where my apartment was, it was once a week, at a minimum.