That's ignoring a lot of evidence we have of police officers planting fake evidence. See for example https://www.buzzfeednews.com/article/melissasegura/josh-tep

That's ignoring a lot of evidence we have of police officers planting fake evidence. See for example https://www.buzzfeednews.com/article/melissasegura/josh-tepfer-mass-exonerations-wrongfully-convicted https://www.buzzfeednews.com/article/melissasegura/josh-tepf... where about 300 people in Chicago alone have been exonerated due to cops faking evidence.