If I say I was driving back from Tijuana Mexico, and Mexican police pulled me over and took $1,000 from me, you will say "Mexican police are corrupt!" and maybe follow up with some racist statements.
But if a Black US driver is driving in Florida, police can just take $10,000 from her in broad daylight, without even bothering to accuse her of a crime.
It's very risky for poor Black folk to do any cash based transaction in the US. Not because they might get robbed by criminals, but by the cops.