They are not following dharma who resort to violence to achieve their purpose. But those who lead others through nonviolent means, knowing right and wrong, may be called guardians of the dharma. Those who really seek the path to Enlightenment dictate terms to their mind. Then they proceed with strong determination.
The Truth is not Arbitrary or a Matter of Opinion, but can be Investigated, and Those who Earnestly Search for the Truth will Find It. The Truth is Hidden to the Blind, but he who has the Mental Eye Sees the Truth.
So in this case, Kalamas, don't go by reports, by legends, by traditions, by scripture, by logical conjecture, by inference, by analogies, by agreement through pondering views, by probability, or by the thought, 'This contemplative is our teacher.' When you know for yourselves that, 'These qualities are unskillful; these qualities are blameworthy; these qualities are criticized by the wise; these qualities, when adopted & carried out, lead to harm & to suffering' - then you should abandon them.
When a wise man is advised of his errors, he will reflect on and improve his conduct. When his misconduct is pointed out, a foolish man will not only disregard the advice but rather repeat the same error.
Meditation brings wisdom; lack of meditation leaves ignorance. Know well what leads you forward and what holds you back, and choose the path that leads to wisdom.