The RSS is not a terrorist organization. If it used violence to secure its political aims, India would be a much more unstable and violent place.
Consider the fact that the RSS has ten times as many members as terror organizations like the Islamic State.
If they were in the habit of using violence to advance their political objectives, India would be ten times more violent than the caliphate, but it isn’t. They also don’t actively procure weapons.
Additionally, the RSS has been involved in plenty of projects providing social good. They gave money and food to victims of the earthquake in Gujarat, floods in Karnataka, they have also given money to build schools, and helped local charities.