Left wing extremisms greatest challenge?

According to Union Home minister, Left wing extremism is a challenge greater than terrorists.

We do not agree with left wing extremism but there is no reason to believe that that are a challenge greater than terrorists and even the so called Gandhian subversion.

The left extremists do not kill innocent citizens and do not plant bombs at busy places with a view to kill and terrorize innocent people indiscriminately. They are also not anarchists and do not indulge in blackmail and subversion like the Gandhian in name of so called anti corruption and electoral reforms campaign.

The worst enemies of democracy and people are first, the Gandhian blackmailers, secondly, the terrorists and last, the left extremists.

http://in.news.yahoo.com/left-wing-extremism-most-formidable-challenge-chidambaram-074027440.html

http://timesofindia.indiatimes.com/india/Naxalism-is-a-bigger-challenge-than-terrorism-Chidambaram/articleshow/9975231.cms