Activism is effective politically and even socially when it starts from one true thing. Even if a giant forest of lies is built up around that, one small grain of truth is what keeps people attached. This is more true of progressive activism than conservative activism, but that is fairly recent.
The reason conservatives lose so much of the time is that they prefer stories that don’t even have the grain of truth and then wonder why people reject them. A good example is the bizarre love affair conservatives have with food stamps needing to be converted into actual raw ingredients. That this was done and didn’t work and that food stamps really are better at both feeding little kids who can’t help who their dysfunctional parents are and at getting said parents to be less dysfunctional is something they appear to be utterly ignorant of. Conservatives prefer a story about how things ought to be over the historical reality.
That’s just one example. There are plenty of others. Wide open topic for discussion.