"Pretty much the same as most of law enforcement, from what I understand".
The only thing anyone needs to understand is the Constitution.
I don't see "law enforcement" as being the authority when it comes to defining rights, although some of them would like to be.
"The prospect of tyranny may not grab the headlines the way vivid stories of gun crime routinely do. But few saw the Third Reich coming until it was too late. The Second Amendment is a doomsday provision, one designed for those exceptionally rare circumstances where all other rights have failed—where the government refuses to stand for reelection and silences those who protest; where courts have lost the courage to oppose, or can find no one to enforce their decrees. However improbable these contingencies may seem today, facing them unprepared is a mistake a free people get to make only once."
Judge Alex Kozinsky