Breaking the law when you know it adds one degree to the crime.
Tips
history
From Wu Jingzi's 《儒林外史》 (Qing dynasty): "好僧官老爷！知法犯法！" — "Some Buddhist official you are — knowing the rules and breaking them!" A satirical jab at clergy who flouted their own precepts.
usage
Especially pointed when the offender is a judge, police officer, official, or someone in a position that requires legal knowledge. Implies extra moral fault beyond the offense itself.
