David Crosby and Graham Nash are scheduled to perform an acoustic set at Occupy Wall Street today. The two will play at Zuccotti Park at 3PM ET, with the set featuring protest songs. Apart from being founding members of Crosby, Stills, Nash & Young and having respectable solo discographies, Crosby and Nash are well-known activists. They are known for their commitments to social activism, and the belief that artists and musicians are catalysts for change. The occupation continues to grow in numbers, and has already featured a range of musicians including Jeff Mangum and Amanda Palmer. It’s safe to say that Crosby and Nash are the most widely known artists to appear at Zuccotti Park, where masses continue to occupy 24/7.