[17][18] From 2010 to 2013, Cohen directed and wrote a nine-part series of short films on China's leading contemporary artists in collaboration with Art Asia Pacific for which he is a contributing editor.

[19] Cohen wrote, directed and produced the documentary Ximei (2019 Movies that Matter Activist Award),[20][21] which premiered at the International Film Festival and Forum on Human Rights in Geneva.

[22] Produced by Ai Weiwei, the film is centered around Liu Ximei, a Chinese peasant woman infected with AIDS during China's Black Blood Economy in the 1990s.

Production of Ximei[23] lasted seven years, due to interference from Chinese officials; Cohen's phone and internet messages were spied on and parts of footage were regularly confiscated.

[24] Cohen participated in Global Geneva's first 'Youth Writes' (Young Journalists and Writers Initiative) workshop in Versoix, Switzerland, in March 2019, helping high school students better understand the role of documentary film reporting.