All "people"? Illegals, non-citizens, terrorists, those on parole, felons, the insane, 4-year-olds ... even Negroes? There's plenty to parse.
What does "to keep" mean? "To bear"? What are "arms"? What is "an infringement"? Plenty more to parse.
And all this is no different that what we do with any other amendment or the body of the U.S. Constitution itself. Yet you think you've discovered some massive conspiracy by "gun grabbers" because they want to parse the Holy Grail of all amendments .... "THE SECOND". (sound of angel chorus)
For opponents of the 2nd Amendment, (those who seek to destroy our system from within), the plain simpleness of the good ole fashioned English must be a nightmare for gun grabbers.
I see you have composed a list of those you fear, and would take away their right. I'll wager that you expect the govt to protect you from them, while I expect to have the ability to protect myself from them.
You cannot infringe on my right to keep and bear arms because of your own fears of someone possessing a gun that is on your fear list.
The responsibilty of a free society is to defend those in their community who are incapable of defending themselves. This is not accomplished by parsing gun rights. This is accomplished by having all free and capable men and women in the community possess the ability to self defend themselves as well as those in their respective communities who are incapable. Four year olds come to mind.