It is unfortunate that the website you mentioned is sugar coating ABVP. As recently as few months ago, they have murdered a Professor in Madhya Pradesh State. Please read -
http://placidfreedom.blogspot.com/search/label/ABVP
Well if ABVP is involved in that incident, the people involved should be brought to justice, no matter to which party or organisation they are related to.
BTW your commie friends or muslim-appeaser Congress party are no saints either. They are involved in 1984 Sikh roits, supported the massacre of 1000s of Hindus in Kashmir at the hands of Pakistan-backed muslim fundamentalists.
I read your link and a couple of articles linked there, the ABVP does seem to have a violent streak.
They also seem to have a great deal of concern for the welfare of Unions. Are they mob (organized crime) related?