

There is no machine or drug or anything else that can “detect” a lie or signs of deception. Polygraph results are purely interpretive, and anything that’s given to interpretation is given to the bias of the interpreter. Polygraph results are also wildly inconsistent. That’s why they are generally not admissible in court.
I dunno… I grew up in southern Arizona, and getting pulled over for Driving While Brown has kind of always been a thing. Latinos have always been harassed by cops, going all the way back to the Zoot Suit Riots and Marijuana prohibition and long before. This country has never been nice to Latinos. Though it does seem to be getting much worse.