Blind assumption on your part, since you refuse to view them.
Hold my beer.
Here is a study: https://www.ojp.gov/pdffiles1/nij/181465.pdf
Here is another study: https://www.ojp.gov/pdffiles1/nij/grants/249850.pdf
Here is a report outlining another study: Study finds misconduct spreads among police officers like contagion | NOVA | PBS
Here’s a little something from the FBI: https://leb.fbi.gov/articles/featured-articles/police-corruption-an-analytical-look-into-police-ethics
Here is a study about drug-related police corruption: https://scholarworks.bgsu.edu/cgi/viewcontent.cgi?article=1009&context=crim_just_pub
Here is a very well researched article about police corruption: https://scholarcommons.scu.edu/cgi/viewcontent.cgi?article=1006&context=svsr
But none of those support your claims.