No, this isn't just like interracial marriage because that was about barring a person born of a certain skin color from marrying normally: man/woman.
The church of LGBT wanting to marry is about completely re-writing how the structure of marriage is built: around the male/female reproductive-potential pair. It is about the behaviors and not race.
It isn't like the church of LGBT found out about Harvey Milk and then shrunk in horror, hoping nobody found out or at least stepped up and publicly disowned him. Oh no. This is MUCH different. This is them knowing, or finding out and instead doubling down on venerating him. Over 60 LGBT groups in the US, Canada & Mexico petitioned vigorously to get a US postage stamp issued of him with their logo, the "rainbow USA" at the top..., long long long after the biography of Milk was published and given their penchant for worshipping all things about him, ostensibly read and understood by all of them.
This is the church of deviant-sexuals standing up to the public and holding up as their hero a man who's sexual perversion was the exploitation and rape of homeless teen boys who were addled, out of their minds with grief, depression, mental illness and drug abuse. This is how he preferred them to be... known to all these LGBT groups who wanted that stamp made to show the world who represents their sexual value system and dogma.
Here is the observation of Milk's close friend and biographer/accredited journalist known and famous for his exhaustive and dogged quest for the true facts, no matter how unsettling they were:
"Harvey Milk always had a penchant for young waifs with substance abuse problems". [page 180 The Mayor of Castro Street; The Life and Times Of Harvey Milk]
This is who is trying now to get married in Utah, where marriage elevates the person to top-tier status to adopt orphaned, troubled kids. These parishoners have no business being near orphaned troubled kids with their "In your FACE with Harvey Milk" apologies and attitudes. If our society has devolved to the point of making sex crimes against children softened, explainable, forgiven or even promoted, I will be an ex patriot and this nation will devolve to 2nd or 3rd world status [eventually] as a world social blight of humanity.
The one and singular cue I am waiting for that this is so, is the church of LGBT v Utah. If that is decided for the neo-child-sex-cult instead of the orphans and good people of Utah and their right to protect children and govern themselves, that is the sign that there is no more democracy here, no more sanity, no more moral moorings and a complete hastening of the total collapse of the USA. No, that is not an exaggeration. People who are adamantly against this and feeling forced to allow child sex etc. cult to "marry" will discard law and order and a civil rift will widen that I fear will never be stitched together again.
That would be a best case scenario of devolution. The worst case scenario would be that people all over time became accustomed to the idea of sex with younger and younger children and the idea of two people of the same gender dressing one as a female and one as a male as "normal". Just like how Ancient Greece devolved over time to upholding men having sex with boys as young as 6 as "perfectly expected and fine".