Director James Cameron called global warming skeptics “swine” at a renewable energy conference in Aspen.
That’s the blunt approach.
Here’s another way of looking at it: what odds are deniers willing to accept that alarmists are right and they’re wrong? How willing are they to play Russian roulette with their children’s future? Are they so convinced of their position that they don’t even entertain the possibility they might be wrong? If so, they are delusional. There’s no certitude on what the next day might bring, let alone the next century.
If they do realize they’re gambling with their children’s future, then “swine” is too polite a term.