Activist groups (such as Stonewall) have been key to the success of the sexual revolution.  We need to pay attention to the ideas promoted and the techniques used.

First, they have been adept at maintaining the convictions of their own members.  They accumulate material at both an academic and popular level that explains their cause.  They build the confidence of their members through support groups.  They present attractive models of courage and persistence.  They showcase the pride they feel in their cause through festivals and celebrations:-

The flagrant sexual exhibitionism and provocative gesturing that marked (and still marks) some Gay Pride events leads many Christians to miss the point. These are not festivals of sexual debauchery. They are secular liturgies that placard people’s deeply held convictions about what it means to be human and, in doing so, embed them further in the hearts and minds of those who hold them.

Second, they set about winning the argument in the public square.  ‘Bad cop’ tactics include those of ridicule (showing up the foolishness of the opponents) and shaming (by claiming the moral high ground).  In today’s Western culture, with is weakening of family ties and the ubiquitous use of social media, is alarmingly easy for a person to be publicly ‘named and shamed’.  ‘Good cop’ tactics seek to persuade you of the force of the argument, so that a change of mind is seen not as a betrayal of the cause but as a moral triumph.

Harrison concludes: ‘if orthodox Christians want to survive as a minority in today’s culture, they need to start acting like one.

Harrison, Glynn. A Better Story: God, Sex And Human Flourishing . IVP. Kindle Edition.  Chapter 6.