Not at all, really. Maybe individual episodes.
When I was in Ithaca, NY, I saw the house he lived in when he was a Cornell professor.
Throughout his career both pre- and post-Cosmos, one of his profoundly-held concerns was about nuclear war, extinction, climate change, (see anything in common?) and trying to communicate to politicians and the public at large the immensity of the universe and that every bit of life we know of is only on this one planet.
It's easy to say "All _____ should be killed" and it's usually for ideological reasons or revenge reasons that people say this.
I'd recommend a watch of "Encyclopaedia Galactica" and "Who Speaks for Earth?" (two episodes in the original Cosmos series). Sagan was very concerned about humans' ability to make whole species extinct and that we've done exactly that - and the politicians and trophy hunters and whoever else just didn't care that in all the universe there will never be any more of those species.
And if humans kill each other off, there won't be any more of us, either. Not that I think we're going to be around for a particularly long time anyway, since we're just so efficient at destruction of our environments and mass murder, and even if we do overcome that, evolution isn't finished. We might dominate now, but later? That's why I get so frustrated with people who sneer at the space program and the search for other Earthlike planets. Where do they think we're going to go once this planet is done for (environmentally)? Or even if it's not our fault and the Sun experiences a massive incident beyond our control?
Sagan just wanted humanity to stop killing each other and the rest of life on Earth. He wasn't saying that every little disagreement means one person is going to shoot the other.