He was arrested in Mumbai on 9 September 2012 on charges of sedition, related to the content of his work. 10 September 2012, Chairman Justice Markandey Katju of the Press Council of India, who is also a former Judge of Supreme Court of India defended Aseem Trivedi saying that "he did nothing illegal" and in a statement, he maintained that arresting a cartoonist or any other person who has not committed a crime, is itself a crime under the Indian Penal Code (IPC), as it is a wrongful arrest and wrongful confinement.
He has been announced as the 2012 recipient of the "Courage in Editorial Cartooning Award" of Virginia based Cartoonists Rights Network International. He is sharing the award with Syrian cartoonist Ali Ferzat, who was abducted and badly beaten in August, 2011 amid the Syrian regime’s crackdown. Ali Ferzat is in the Time magazine’s list of the 100 Most Influential People in the World. He was also nominated for the Freedom of Expression Awards 2013 by free speech organization Index on Censorship.
He was also a contestant in Indian TV reality show Bigg Boss (season 6).