We will never convince the deniers. Giant world wide conspiracy theories are fun and exciting to think about. Slowly changing climates, where the action happens over years or even decades, just can't compete with that for entertainment value.
Then there is the feeling of belonging these socially handicapped tRumpkins get from high-fiving each other every time they think they've scored some sort of point. For instance the 2 dozen or so threads that were started about the polar vortex disruptions last week.
And finally there's the way these things are presented to them, as if they are some kinda privileged information that only a chosen few get to know. It makes them feel (falsely) superior to everyone else, even if only for a few minutes, and that can be a powerful thing if you suffer from low self esteem like the vast majority of these nut-bars do.
Or maybe we're right and you're wrong.
You discount that as a possibility because you have the whole corporate, university, media, Hollywood elite establishment backing your side of the story.
But science isn't decided by a vote of scientists, with the majority always being right.
There was a time when scientists believed Earth was the center of the universe, and that view was backed by the full force of the Catholic Church.
Galileo believed otherwise, and for that he was punished.
Now, we know Galileo was right and all those other scientists were wrong.
And so it with global warming.
And I am old enough to remember global cooling, nuclear winter, and all the other doomsday theories that have come down the pike in the last 30 years.