By domestic, I'm referring to "soft power"* cultural destablization, intended for export around the world to keep the natives distracted and happy. Think Disney on steriods. By foreign, I'm referring to "hard power" US imperialist policies, neoliberalism (in former days, anti-communism).
Omar Mateen was part of the jetsam washed up on US shores as a result of the US-sponsored 'jihad' in Afghanistan in the 1980s. He was born in New York and grew up as a product of the latest warp in American culture. His anger is homegrown, American through and through, shared by millions of Christian (less so Jewish) Americans. It cannot be airbrushed out of the glossy infomercial of American freedom we are fed in the mass media.
Omar was born in 1986 in New York, to one of the 'lucky' Afghan families who snagged a visa to the land of freedom. This was at the height of the US-sponsored 'jihad' against the Soviet Union, when the US-backed insurgency forced millions of Afghans to flee ther homes and live in refugee camps in Pakistan.
It was cool then to like Osama Bin Laden, and to go to Afghanistan to massacre Afghan socialists supported by the Soviet Union, desperately trying to hold together the fragile Afghan state. Omar's father was welcomed to the US as a committed anti-communist freedom fighter, a devout Muslim, a supporter of the Taliban. Omar--and Orlando--was a direct result of this.
Western-style homosexuality ' western-style homophobia
But the Disney mass culture being exported as part of Bush senior's "New World Order" from the 1990s on has not been as successful as earlier versions, and "gay liberation" is at the heart of the problem.
The civil rights won by gays in the late 60s marched on into uncharted territories. The cultural wires got crossed, causing short circuits like Orlando. It is a symptom of something much deeper. There are many other less spectacular cases of what is now dubbed "homophobia", a term coined only in the 60s, along with "gay liberation".
The movies exported to show the wonders of the West became more and more laden with graphic sex-and-violence, and even sado-masochism, where master and slave act out the old imperial agenda in a slick fetishtic way, that include male-male sex, and portray a new metrosexual lifestyle. The Orlando Pulse disco would have featured lots of chains and other bizarre get-ups, where mostly men were acting out their fantasies.
This 'culture' is seen in the third world as part of the western imperial agenda to weaken moral fiber and keep them (literally) in chains. Westerners are blind to nonwestern precapitalist sexual mores in the (now ex-)colonial world, where there was some acceptance of homosexuality, but which didn't fit western style gaylib, now exported to them with State Department funding as part of the soft power conquest of the third world.
The advocates of this paradigm advocate what looks like a scientific, essentialist program that the entire world should adopt. What it is, however, is a kind of western secular nativism seeking to replace what it sees as backward nativisms everywhere, forcing one and all to choose their slot. Practitioners of msm (men having sexual relations with men) who reject the gay slot created for them by western activists are catalogued as "self-hating" and guilty of "homosexual homophobia".
The same process replicated itself in the US among blacks, who did not pay much attention to whatever msm there was among blacks until the black civil rights movement took off in the 1950s and homosexuality was seen as a white affectation that was part of their own slavery and should be stamped out.