How many? What percentage of the approximately 800,000 LEOs in the US lie in court?
Considering the lies are used to deprive people of their freedom, I should ask what percentage is acceptable to you? It’s difficult to measure because most lies are never discovered. I assume you wouldn’t mind of a cop’s lie put you in jail? I can tell you don’t consider it a big deal if it’s somebody else.
How’s that badge taste?