What differentiates a religion and cult is RELIGION aims to cultivate virtue and compassion in people to create a peaceful harmonious world. But as with all religion, there are good and bad practitioners. It's not the fault of the religion. It is the practitioners polluting the teachings by not applying it but instead using it as a means to attack, create war and nourishing one's ego.
Hence, we should take Trijang Rinpoche's advice deep into heart.
"But some who are narrow minded, not understanding this point, consider this Dharmapala to be like an ordinary worldly being and, with supposed faith in the Dalai Lama and the Panchen Lama, disparage him; or else they indeed admire this great Dharmapala but criticize the Dalai Lama or Panchen Lama. Using either one as a reason not to admire the other and speaking badly about either in any way is the conduct of an ordinary being who, under the influence of attachment and hatred, just tries to help friends and hurt enemies; it obscures the increase of these great holy Aryas' deeds and creates the karmic cause to experience unbearable suffering in the future."
- Kyabje Trijang Rinpoche's advice in Music Delighting The Ocean Of Protectors:, 1967
As a Dorje Shudgen practitioner, it is important to act accordance to the pure teachings of Lama Tsongkhapa. If the Dorje Shugden religion continue to produce only good results, honorable monks and scholars which will be of benefit to others, people can continue to indulge in name calling, sarcasm, rude remarks, threats and murders for all they wish. It will not do any justice and eventually the truth will prevail.