This is of course awful, and should be approached carefully by all side. But it seems there is a certain amount of misinformation floating around in this thread. Firstly, an "assault rifle" when talked about in this sense, is not, I repeat NOT an automatic weapon. You pull the trigger once, one bullet comes out. Automatic weapons have been banned in the USA to all but a highly select few for nearly a century. I do not personally own an AR-15 (one of the type of weapons reportedly used in the shooting) but have fired them and they are tactically no different than any other semiautomatic weapon. The term "assault rifle" has nothing to do with the lethality of the weapon but more about the "other stuff" such as flash suppressors, folding stock, or pistol grip. Assault rifles aren't even the most dangerous type of firearm, and actually more people are killed in the US by blunt objects than assault rifles.
As to high capacity magazines, a lack of these would not slow an avid marksman. It takes less than a few seconds to change a magazine for someone who knows what they are doing, so the difference between two 10 round magazines ("low capacity" by most laws) and one 20 round magazine ("high capacity") is a matter of five seconds.
Next, ISIS has claimed responsibility and the shooter reportedly pledged allegiance to ISIS on the telephone, so we don't know whether this was any sort of organized attack or whether it was random. I don’t know if or how that changes this, but at least it sheds some light.
Next let’s talk numbers. According to the Congressional Research Service there are a little bit more than 300 million guns in the USA. In 2014 (most recent crime report from FBI) there were roughly 8.6 thousand firearm murders in the USA. Now, that makes it less than .00003% of all guns that actually kill people! And that is EXTREMELY generous, seeing as that assumes 1 gun per death, as opposed to 1 gun/multiple deaths.
I see different sides of the same coin in multiple people on this thread. On one hand we have, "guns are evil" and on the other "Muslims are evil." Are either correct? No. I have guns yet I think some changes need to happen. But on the other hand, STATISTICALLY SPEAKING, if you assume 1.6 bil Muslims in the world, and 106,000 members of extremist groups (found that on CNN, hardly a conservative bastion), the percentage of Muslims who are extremists in the world is over 2X the number of guns in the USA that commit murder. But in no way do I think Muslims are "evil." Hell, I've got friends and relatives who are Muslim.
Lastly, regardless of perception, gun related deaths have significantly fallen over the last twenty years. This is in spite of more guns. We also see other countries (I'm looking at you Switzerland) that have high gun ownership rates with low murder counts. The problem is not that there are guns but WHO has them. Now, don’t get me wrong, 1 gun death is too many. And it is good that we are more in touch with what happens. But don’t let the media convince you that *suddenly* the world is ending because of guns.
Something that I've really come to realize over the past year thanks to my time at college is how much alike we are, regardless of our political, philosophical, or religious stances. I was raised in a very conservative home and was fairly isolated in that conservatism among my friends and family. Somehow I developed this sort of unspoken idea that there were lines drawn in the sand. Somehow, I didn't really expect to meet as nice of people as I did who disagreed with me. No one had ever said that sort of thing, but it was an underlying expectation. However, I found that to be radically wrong. I don't think anyone on this site is that far off in what they want, deep down. We want peace, harmony - whatever you call it. No one on this site wanted that shooting to happen. But it did. We all want this problem to go away. We just disagree on how to do it. Sure, some of us may seem a tad crazy at times, but I don't generally think anyone on this site is an awful human being. So relax a little and remember it isn't conservatives vs liberals or any other sort of "us vs. them." It's us vs. hunger/sickness/murder/rape/global warming/whatever. (Kumbaya over)