Ten words:
Never Let The Cops Into Your House Without A Warrant.
In that vein, there's two videos here about talking to the cops:
One Two(Hint: After 50 minutes of talk, the advice can be boiled down to
five words - Never Talk To The Cops)
So, next time there's a crime committed in your vicinity (or you commit a crime), save yourself a few thousand dollars in legal fees and just start not talking to the police from the start.