one has to take responsibility and not, as some one described it, indulge in shoot and scoot politics, denigrating people's reputation, however credible the rumours may seem and however tempting the chance to score brownie points or capture media attention and public sympathy as a crusader against corruption," Gopinath said in the blog.
Referring to the defamation case, he said Kejriwal committed a mistake by not appearing in court.
"His lawyers argued he was busy with elections and pleaded for time. That was the first mistake. If one has time to accuse some one, then one must also find the time to appear in court and defend oneself and not only present evidence to prove the allegations but also press charges for prosecution," he said.
Noting that Kejriwal refused to furnish a bail bond pleading that he had not committed any crime as his action was political, he termed it as "convoluted logic".
"His actions of naming high profile politicians or businessmen may have a worthy political cause of exposing corruption in government and crony capitalism, but it cannot by any stretch of imagination be equated with political activism," he said.
Gopinath had joined the party in January stating that "Kejriwal's AAP is seen transforming that hope of Anna's fight against corruption into action."
He had however openly slammed the decision of the AAP government in Delhi to reject FDI in retail, saying the party is "running in danger" of being branded like other parties of resorting to cheap and populist measures.
Gopinath had earlier openly chided AAP on some of its actions.
He had accused AAP of unwittingly playing into the hands of "Indian oligopolies" opposing FDI in retail so that they could have a monopoly.
Noting that AAP was still a young party, he had said it must step back a little and come out with a long-term vision for India on economy, fiscal policy, defence and foreign affairs.
"The enemy of AAP is not Congress or BJP, it is from within. Can it remain humble and be true to its ideology of being servants of the people and not masters once they come to power?," Gopinath had stated.