 More recent speakers have included New York Times columnist Bret Stephens in 2017, American Enterprise Institute president Arthur C. Brooks in 2018, former assistant secretary of state for political-military affairs John Hillen in 2019, and philanthropist and Carlyle Group co-founder David Rubenstein in 2019.Musical artists from many genres have performed on campus in the 21st century, including Moon Taxi, Futurebirds, Perpetual Groove, Pat Green, Girl Talk, George Clinton and the P-Funk All-Stars, Alison Brown, Leftover Salmon, Turnpike Troubadors, Robert Earl Keen, Keller Williams, SOJA, Citizen Cope, Sister Hazel, Vanilla Ice, Spin Doctors, Afroman, Big Gigantic, Pigeons Playing Ping Pong, David Wax Museum, Little Feat, Railroad Earth, The Revivalists, Craig Morgan, Bruce Hornsby, Pretty Lights, Tea Leaf Green, and the Drive-By Truckers.Under the influence of his mentor and father-in-law Witherspoon, Smith named the college for two English champions of liberty, John Hampden (1594–1643) and Algernon Sydney (1622–1683).