I don't understand why it's controversial for law-abiding citizens protecting themselves under the Second Amendment.

I'm a defender of the Second Amendment to the Constitution.

The constitution shall never be construed...to prevent the people of the United States who are peaceable citizens from keeping their own arms.

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

[The Constitution preserves] the advantage of being armed which Americans possess over the people of almost every other nation (where) the governments are afraid to trust the people with arms.

I'm a gun owner and strong supporter of the Second Amendment.