i think its in the areas that people are getting arrested in and the police in those areas that take it seriously. im my town (90% white) if a cop find a gram on you you do a night in jail. that it. then you go home. in nyc or other places that whites are a minority, the police may be more stern on pot users, whether their white black or blue. it just so happens that more blacks get arrested in that area because the cops are more stern and theres a larger percentage of blacks ect. white will still get arrested but there are less to be.