Sure, if you're talking generally that it's a good idea for scientists to be able to better communicate their ideas, I'm 100% behind that... but that's not what she's saying... she's saying that her sociological techniques are needed to convince people that climate change is a huge, immediate, panic-inducing problem, and the implication is that communicating teh science alone will not do that, and there needs to be some underlying sociological bag of tricks to get the job done.
Her deep south racism / slavery analogy also implies "I'm right, and everyone who doesn't agree with me is no better than a racist yokel". Over-the-top rhetoric apart, this analogy is wrong for two reasons (1) While it's possible for scientists to convince reasonable people of their theories by providing proof, some people (of whom there seems to be an abundance in the US deep south) are not going to be convinced, because said proven theory goes against a deep-seated belief that they hold, so accepting that theory would mean rejecting themselves (2) a better analogy to use in this case is evolution/creationism rather than climate change/climate denialism, because in the first case there is actually over a hundred years of solid science stacking up and backing evolution. For climate change, while there is strong evidence of warming, the 'human-caused' element still hasn't been properly calculated, let alone the 'what do we do about it?' part