Seth Milner wrote: I see mostly churches that are members of associations or conventions or whatever they're called. No fundamental or independent religions or denominations are listed.
That's would be a pair point - if you only looked at the second graph. The first graph DOES include Catholics and other major denominations. The story is the same; acceptance of homosexuality has risen dramatically over a mere seven years.
That matches data from other sources too. Here in Canada the single largest Protestant denomination, the United Church, has endorsed and performed same-sex marriages since even before the starting date on those graphs. The increase in acceptance is the same in most if not all other western countries. Ireland for example, an almost entirely Catholic country, which recently approved same-sex marriage in a country-wide referendum.
It's generally believed that the question regarding one's religion was a major reason the right-wing religious backed Conservative Party here in Canada did away with the extended census questionnaire. Not because they thought it was a privacy issue, but because they didn't like the long-term trend. It's harder to get politicians to heed the wishes of the fundamentalists when polls show them disappearing. (The Liberals are bringing the extended census questionnaire back.)
Seth Milner wrote:The closet I see in that chart that would be considered fundamental is the Church of God of Cleveland, TN who show only a 22% increase, the lowest of all.
There will always be outliers. There will always be those who cling to old bigotries. The Mormon church still considered blacks to be subhuman even when Mitt Romney was preaching for it.
Seth Milner wrote:and as long as it's in their church by-laws, it's legal.
Well sure. No-one argues against it being legal. They're free to preach whatever they want, just like some Christian organizations still preach white supremacy and many (including the Church of God of Cleveland) don't allow women in higher church positions.
It's only a problem when they try to use government positions to dictate their policies to others, or their companies that deal with the general public to refuse services to women, non-whites, etc.