Big week for social media.

Colin Kaepernick tweets his new Nike ad, Nike retweets, and it’s on. Did Nike just make a big mistake, or did it lock in the loyalty of a valuable customer base?

Plus, Facebook’s Sheryl Sandberg and Twitter’s Jack Dorsey go to Capitol Hill and … I know what you’re thinking, no, Dorsey didn’t go for a Civil War battle reenactment, though with that beard he’d make a dashing Rufus King – I’m just saying – with a bow tie? That’s fresh.

No, they went for a Senate Intelligence Committee hearing, to talk about what they’re doing to make sure foreign powers aren’t futzing around with our Midterm elections, which are coming up in just two months.

This is Fortt Knox, rich ideas and powerful people. I am Jon Fortt of CNBC.

Charles Duhigg, Pulitzer Prize-winning contributor to the New York Times Magazine joins me; he has covered the legal upheaval coming to the social space. And Ellen Pao, CEO of Project Include, former CEO of Reddit, and canary in the “Me Too” coal mine joins us.