Ex-journalist and Aam Aadmi Party leader Ashutosh appeared before National Commission for Women (NCW) in compliance with t panel's summon dated September 5.
"I appeared before them (NCW) because I have faith in the Constitution of this country and the institutions established by it," Ashutosh told reporters after coming out of the NCW office.
"I told them that your letter is violation of my fundamental right. The Constitution gives me freedom of expression," he said.
Commission had summoned Ashutosh for writing an article in defence of sacked Delhi Minister Sandeep Kumar.
Sandeep Kumar was suspended after a sex tape featuring him surfaced recently.