Since 1934 only 2 crimes have been committed by legally owned machine guns by the way.
TR: you should consider what you write prior to posting. In the quote above, you just made one HELL OF AN ARGUMENT for those wanting to ban firearms. Hell, we can argue among ourselves all we want; but let's not give the other side any more ammunition than they have.
Why should there be a line?
ALL actions on the planet; in human society; from the beginning of time until now; HAS A LINE. Stop being euphoric and think reality. Let the other side have their "Rodney Kings". How many times must people be reminded that all rights, privileges, actions, and expressions HAVE and MUST HAVE guidelines/limits/rules/laws/ or whatever the hell you want to call them. WHY? Because no 2 people on the planet think exactly the same. And because of that, there WILL, not maybe but WILL, have differences of opinion on where one person's Freedom to Exercise their rights crosses over to Infringing on Someone Else's Rights. That is why the 1st amendment has rules/limitations/laws/etc... concerning freedom of speech and freedom of religion. That is why numerous privileges like alcohol, driving, etc... have limits/rules/laws/etc... For some God only knows reason, there are quite a few people who like to continue to quote things such as: Gun laws don't reduce crime; and similar. Again; how many times does it have to be said, that laws are NOT necessarily made to reduce crime or to impact crime. Matter of fact, the vast majority of laws aren't even written with a criminal in mind. That's because a true criminal couldn't give a Rat's A$$ what the LAW says. The overwhelming majority of laws are written to arbitrate and to maintain order. That's why the individual who is EXERCISING his right to the Pursuit of Happiness by driving his Camaro at 125mph, isn't ALLOWED to do it on a public road. That's why the person who is exercising their right to Liberty, via the tool of free speech in the 1st amendment, isn't allowed to take their frustration out on another person and verbally assault and abuse them.
There is obviously limits on ALL actions and expressions. Even the ones you want to call "RIGHTS". And it MUST BE SO. It has been this way since creation in ALL SOCIETIES. Some may have been for repressive purposes, while other societies do it to maintain social order and minimize civil unrest. Either way, it is a necessity.