Can we get there from here? Can the 'right' and the 'left' go back to being two wings on the same noble bird?

I know how I succumb to my own darker nature every day. I'm part of the problem and I don't kid myself about it. My own vitriolic rants have time and time again reinforced a wall of separation between myself and those with whom I disagree. I want peace. I want social justice. I want clean air and water and a beautiful expanse of tomorrows for my grand children. I want quality education and unrestricted freedom to learn and express. I love idealism, and creativity. I believe our potential for growth outweighs our tendency to stagnate and decay and do unspeakable wrongs to one another. I could go on forever about "life liberty and the pursuit of happiness". I am blinded by my own experiences and observations. How can I transcend the filters of my perception, and all the hyperbole and histrionics that arises from my own arrogance and worthless 'sense of self'? It is agonizingly futile to go on about how 'I' feel, and why 'I' feel that way, and then that awful word, "but" always comes up. "I'm sorry, 'but....." " I want to help, 'but'......" " I understand how you feel, "but"......"
Honestly, I think the only answer is to accept our differences and simply set them to the side. Is there any possible way to offer an olive branch in the situation that we are in? Can I say, " I hate things that have happened, and I want nothing more than to work towards stopping those things from happening more."? My mind screams to find blame. My mind screams to declare 'wrongs' and point my finger. My mind screams that my ideas are the best ones. I want to shut all that off and simply say. "I hate hating, and I want things to be better for everyone."
How do we get 'there' from 'here'?