All you have to do is be old enough to have watched what the left did with homosexuality to brainwash the young and gullible (and obviously succeed).
You can see it happening now with both pedophilia and bestiality, but those who are unaware of what has been done in the past in this cultural regression are indignant that it's ridiculous to make the comparison.
And yet, the comparison is there for any and all to observe. It's happening, in spite of their naïve protests that it never will.
They are still 'culture norming' homosexuality by stuffing it into the story line of pretty near everything in entertainment.
Other deviant behaviour will be squeaked into the 'edgy' standup crowd before it gets trickled into the sitcoms before it ends up in regular dramas. That's the usual progression. The 'edgy' crowd rely as much on shock and nervous laughter as humor, but between nervous tittering and the laugh track, the people 'at home' are trained to laugh at virtually anything. Then, it comes out in sitcom material, then it slipped into serial dramas, usually somewhere into the middle of or later in the first season when people are busy identifying with other characters enough that they will not just stop watching, because they feel invested in the story line. It's the same reason people will finish a book they don't particularly like aspects of. By the end of the season, if they keep watching, they are over any initial revulsion and are more accepting of the deviant characters, just so they can keep up with the story and the character(s) they identified with. In time, deviant characters will become major characters in story lines, and the process will be nearly complete. All that will remain is taking the deviancy out of the fictional realm and into the news and the courts and/or legislatures, with sympathy generated in advance by 'entertainment' media.
It is an interesting process of culture norming deviancy, and an insidious insertion of depravity into the mainstream but fictional cultural matrix, then into the culture itself.
The formula has already been followed, and likely will continue to be used.