It turns out (bizarrely) that Steve Bannon is a big fan of the Gracchi brothers.  Tom Holland uses the opportunity to plug his book.

But who ARE the Gracchi, I hear you cry - & what possible resonance might they have in today's America? #Rubicon https://t.co/Vv6KeDkxUH

— Tom Holland (@holland_tom) March 4, 2017

Having read Rubicon myself, I agree it's an excellent primer on the Gracchi brothers.

See also Extra History.
See also Dan Carlin.