The Orlando shooter was not insane, or a deranged madman: like all haters, he had to be carefully taught.
Indeed, he had visited the Pulse Club some dozen or so times beforehand, and had perhaps sought to hunt down victims by using gay dating apps. This, in short, was a man with malice aforethought. (See also this story, which suggests that much more about the planning of this act will come to light soon.)
The rifle he used was not an AR-15.
In fact, there is no such weapon as an "assault rifle." If you can't define it, you can't regulate it.
The shooter was not on any "watch list" or "no-fly list" when he bought his guns (though he had been on one earlier). Instead, he was employed with a major firm providing security services for the DHS and other government agencies.
This was not the "greatest single mass shooting in history on American soil." Think Wounded Knee. Think Tulsa in 1921. Or even the Mystic Massacre in 1637. All were directed against groups who were the objects of prejudice and hatred. Most of the deaths were by gunshot, and all of the dead, including many women and children, were unarmed and mostly defenseless.
Indeed, our history of massacres against American natives alone is shameful to catalog. Google's page for that category lists 51 separate links to individual accounts.
For Planned Parenthood to state that the Orlando shooting was the result of "toxic masculinity" and "imperialist homophobia" is like Kermit Gosnell saying that he performed live-birth abortions because "as a physician, I am very concerned about the sanctity of life."
In this day and age, words are cheap. Pay attention to who is saying them.
Crazy times beget crazy people. Don't aid or abet them by spreading their memes.