In synthesis, the answer to your question is: liberation within you. How you get there depends on your will and the will of your Innermost.
Nirvana can be attained through millions of births and deaths, but it can also be attained by means of a shorter path: this is the path of “initiation.”
The Initiate can reach Nirvana in one single life if he so wants.
-Samael Aun Weor, The Zodiacal Course
Remember that your internal states attracts your life. If you contain misery, fanaticism, despair, negativity, and destruction, you will attract such corresponding events from the exterior world. If you are having negative conversations with people, you must first question your own internal, psychological motives, to see if, perhaps, you are transgressing by provoking others with your beliefs, no matter how justified.
I do not know the manner in which you've spoken to other people, but perhaps the following quote might orient you. It's certainly helped me to be more productive and constructive with my fellow men:
We violate the law of the tranquil heart when we criticize others.
-Samael Aun Weor, The Aquarian Message
Interesting when this quote comes from a book or exegesis of the Book of Revelation, which many people interpret as "doom" and "gloom." The truth is that there is tremendous hope. The light shines brightest where the darkness shrouds most.
We must always learn to respect the will of others, even if this means not speaking about the matters you've mentioned. It is a crime to be silent when one must speak, and a crime to speak when one must be silent. There are many ways we can contribute to society in a meaningful and positive way, but always this necessitates a tremendous internal revolution, whereby we learn to associate appropriate psychological states with their concordant external events.
The best weapon that a human being can use in life is a correct psychological state.
One can disarm beasts and unmask traitors by means of appropriate internal states.
Wrong internal states convert us into defenseless victims of human perversity.
-Samael Aun Weor, Treatise of Revolutionary Psychology
Therefore, if you are getting negative reactions from people, perhaps you must re-evaluate your psychological states and behavior. There are many ways we can help humanity, but in order to do so, we must be the impetus for change, eliminating negative and erroneous psychological states from our interior.
Also, if you allow your mind to express its negativity, you will continue to be a victim of circumstances. However, with appropriate psychological states: legitimate happiness through the cognizance of the Being, altruism, solar conscious faith, and inspiration, you can in turn show others the path of peace and liberation. But in order to do so, you must be a good example.