It does happen. How often are these horrible taxpayer-paid fiends not caught planting evidence in an attempt to convict an innocent person just to attain a prosecution?
"Former investigator ordered to pay nearly $6.5M for planting evidence"
"Kofoed did not respond to any motions made in the case, and he has said in the past he has no means of paying any order."
Perhaps a few decades in prison to send a message to others in a position to plant fake evidence!!!