Whatever sails your boat.
You threw this BS out as if police do this a lot. They don't. And you cannot offer any statistical proof that proves that they do if you look at the number of cases that pass through the court system.
You posted garbage and the best you can do when challenged is "whatever floats your boat".
Please prove that in many cases police do what you said they do. That they lie in court to obtain convictions.
If you are going to make such an assertion here back it up or at least agree that you meant "in a few cases". It is simply not a common practice that police lie in court.