Daniel P. Sheehan ( born April 9 , 1945 ) is a Constitutional and public interest lawyer , public speaker , political activist and educator . Over the last forty-five years he has participated in numerous legal cases of public interest , including the '' Pentagon Papers Case '' , the Watergate Break-In Case , the '' Silkwood '' Case , the Greensboro massacre Case , the La Penca bombing Case and others . He established the Christic Institute and the Romero Institute , two non-profit public policy centers . Sheehan has spoken publicly about UFOs/alien visitation and has participated in Disclosure Project events . Since 2015 Sheehan has lectured on American history , politics and the assassination of John F. Kennedy at the University of California , Santa Cruz . Sheehan is currently Chief Counsel of the Romero Institute , where his focus is the Lakota People 's Law Project . Sheehan and The Lakota People 's Law Project participated in legal cases related to the Dakota Access Pipeline protests . In 2013 Sheehan published '' Daniel Sheehan : The People 's Advocate '' , a memoir , through Counterpoint publishing
Greensboro massacre
Greensboro massacre
Daniel Sheehan (attorney)