Things we also know:
black people are much more likely to be arrested and held for hte same crimes (or lack of crime) than their white counter parts.
Black people are much more likely to be charged in similar circumstances than white, and more likely to be charged with heavier charges and found guilty and given higher sentences (including to serve jail time rather than probation or fines) than white counter parts.
so that alone skews the stastics, doesn't it?
and then we know that there is an extremly high rate of recitivism in this country, and that "low risk/non violent" criminals often come out of jail much higher risk and more likely to be violent--so simply jailing the black kids cuaght with pot and not their white counterparts means we are contributing to the problem of more black men involved in violent crime (after learning to do so in prison, and losing faith in society, and losing the ability to get decent jobs beucase they were in jail previously etc) than white people (who might have doen the same thing as teens but not been put in jail).
now add in that in nearly every state the rates of black people living in poverty are at least double that of white (often more) and let's look at how poverty and economic difference effect crime and how that affects the childhood and education of people before they are even old enough to havem uch of any say in their own lives and we start to get to the roots of many of these problems---you know, where we are OK with letting poor people (which affects black and hispanic people at much higher rates to this day in our country) grow up with violence, not enough food, sub par schools, dirty water, lack of access to good public tranist or afforadble fresh groceries, etc and you see how pervasive the issue really is and how difficult it can be to "escape"
We do know, from many studies that even black officers and black judges tend to see other black people as more likely to be guilty of a crime based on same evidence, and more likely to be a threat, etc---which once again points to how pervasive and all emcompassing this attitude is in our daily lives ti such a point that we truly do not see it or intend it, it is just there--which is the point--that needs addressed. It it can't be addressed by people who refuse to see it.