Same reason enforcing random pat-downs for illicit substances, or traffic stops for speeding, racist or biased. Because the people enforcing it are biased, and

Same reason enforcing random pat-downs for illicit substances, or traffic stops for speeding, racist or biased. Because the people enforcing it are biased, and often racist. That's exactly why it's phrased as reducing encounters with police, because police encounters are disproportionately negative (or hostile) for people of color. Has nothing to do with the actual infraction. Of course, you'd know this if you'd paid any attention to the news, considering it's currently the third most major political issue US.