Karsch left United Artists to run companies and continue producing under his Longfellow Pictures banner first with William Randolph Hearst III and then Sidney Kimmel.
In 2010, Karsch founded the company Insurgent Media,[2] which has produced several documentaries including the SXSW award-winning Beware of Mr. Baker;[3] Blank City, about underground film, music and art in 1970s New York;[4] the Emmy nominated American Masters Woody Allen: A Documentary;[5] PBS' Before the Spring, After The Fall; and the Netflix Original Mission Blue.
[11] At that time he was also concluding post-production on A Hundred Camels in the Courtyard, his feature documentary examining and in many instances replicating a trip taken by then composer Paul Bowles across Morocco over half a century ago both recording the music and observing the customs of the more remote and exotic tribes throughout the country.
In 2012 working with The Culture Project, Karsch produced and co-wrote the critically acclaimed Blueprint For Accountability,[15] which was presented at the NYU Skirball Center and broadcast live online around the world by FORA.
Panelists included Valerie Plame Wilson, Jeremy Scahill, Ron Suskind, General Ricardo Sanchez, Vince Warren, Rose Styron and Robert F. Kennedy Jr.