Gee, it's a good thing Anthropogenic Global Warming is just a Big Leftist Conspiracy, or imagine how bad things would be!
How much evidence is required before denialist clowns will be convinced that Global Warming is a thing, and it is almost certainly Our Fault?
See, this is why global warming is a religion, rather than science. If you don't agree with the entire GW dogmatic scripture, and you question anything at all, then you're straw manned as denying everything at all, being anti-science, etc.etc.etc.
There's the position that you hold, where "AGW IS REAL!!! WE'RE CAUSING EVERY BIT OF IT AND WE'RE ALL GOING TO DIIIIIIIIIEEE!!1!1!!"
Then there's the position you claim everyone who disagrees with you holds, where "AGW ISN'T HAPPENING! THERE IS NO WARMING! CLIMATE DOESN'T CHANGE AT ALL! YOU'RE ALL LIAAAARRRSSS!!!!11!!11"
Your statement makes it quite clear that you think no other position exists. Regardless of your black and white view, there is a whole scale of opinions in between your two extremes.
How about: "Yes, the earth is warming slightly. We're probably causing a little bit of it, but there have been continual climate fluctuations for millions of years, without any human cause, so it's entirely likely that this is at least somewhat natural, as well. As a natural process, it will reverse itself with time, just like it has every other time in the past."
Or maybe: "Yes, the earth has warmed marginally over the past 50 years. It seems to have paused at the moment, though, so maybe it's going to start cooling by itself within the next couple of decades, so maybe we're not causing it at all."
Or even: "Well, there is a bit of warming, but it's not anywhere near as quick as it was at the end of the ice age. We're probably causing most of it, but we're looking at a temperature that's still lower than it was 10,000 years ago, so we're certainly not at a point of no return yet, regardless of what the extremists are shouting."
Regardless of you being an extremist loon, that doesn't mean that everyone who questions you is an extremist loon in the opposite direction.