Sounds like Mr. Aldenberg was interested whether there have been any political leaks to Sundance. Sundance turns this conversation around to try to persuade the reader that he's managed to get an interview with Aldenberg (as a reporter).
The "glyphosate (Roundup) causes cancer" thing was invented by trial lawyers as a backdoor way of attacking genetically modified organism (GMO) crops. "Roundup-ready" crops (cotton, soybeans) are the most widely used GMOs, and since the greenies couldn't get enough people to care about them, they've resorted to a "lawfare" strategy. Too bad for the NRA for perpetuating it.
Antifa = literal poo-flinging monkeys