Explosive new documents reveal the U.S. agribusiness giant Monsanto ran a “fusion center” to surveil and discredit journalists and activists who criticized or wrote damning reports about Monsanto, as well as legendary singer-songwriter Neil Young, who released an album in 2015 called “The Monsanto Years.”

Monsanto monitored Young’s Twitter activity and even analyzed the lyrics of his album.

The fusion center also surveilled journalist Carey Gillam, who has done extensive research and writing about Monsanto and its popular pesticide Roundup, which has been linked to cancer. The corporation also targeted the nonprofit research group U.S. Right to Know, which submitted Freedom of Information Act requests about the company.

From Kansas City, Missouri, we speak to Carey Gillam, a veteran investigative journalist and author of “Whitewash: The Story of a Weed Killer, Cancer, and the Corruption of Science,” and from Berkeley, California, Gary Ruskin, co-founder of U.S. Right to Know.