Let me just start by saying that anyone who tries to shame you for your body, the color of your skin, or your sexuality, regardless of what they are, is simply not to be trusted. They aren’t seeing you.
That being said, if you identify with any of those things and mistake that to be your essential being, then you make confusion possible.
This must be the reason for your distrust of any who discriminate in terms of such things. You are not your gender, your sexuality, your appearance in any way. Consider such things molded by the hand of God, or the Tao, or complete chance, but do not make the mistake of thinking you had any say regarding the body and circumstances into which you were born.
How many bodies have you experienced before you were born? How many may come after? Perhaps some or perhaps none; but before birth, during life, and after death, what do these things really mean?
All that being said, sexism, racism, and many forms of prejudice still abound in modern societies. They exist in very real ways. People are seen differently, treated differently, and wrestle with different consequences.
It’s interesting to observe, however, that all of these revolve in somewhat dualistic manners: homosexual vs. heterosexual, “majority” vs. “minority”, male vs. female, cis vs. trans, and so on. The struggle is always happening within those contexts. The way past this reminds me of an Einstein quote: “We can not solve our problems with the same level of thinking that created them.”
So long as we see each other in terms of parts and pieces, these kinds of struggles will exist. We will perceive others as being separate from ourselves and therefore regard them in ways in which we ourselves wouldn’t want to be regarded.
When we speak to others, using words like “man” and “woman”, “gay” or “straight”, are useful for communication. But by yourself, within yourself in absolute solitude, are any words necessary? You are you, and you are that aliveness that abides in and as the very core of your existence. You don’t need anyone else to tell you that you are alive, nor do you need to tell anyone else.
Everything else from there is just an expression of aliveness. Feeling this truth, you can appreciate the livingness in all its expressions, regardless of what they are. They are not separate from you.
Now, while there are some real changes that need to happen in terms of equality and acceptance, I don’t believe lasting and true change can happen without first being precipitated by legitimate insight and awareness into what it means to be alive regardless of bodily appearance or preference or circumstance.
"Hatred never ceases by hatred, but by love alone is healed. This is an ancient and eternal law." ~ Buddha
“I defeat my enemies when I make them my friends.” ~ The Dalai Lama
If we get too caught up in identification, it will feel as though we are warring against others. When we regard identifications more as expressions, it becomes clear that the struggle is not against each other but against ignorance in all its forms.
Those who feel moved to educate and campaign for the benefit of causes they support should definitely do so. I only urge them to practice the compassion, openness, and acceptance that they themselves are rightfully calling forth from others.
As we find the peace in ourselves, we begin to see the peace in each other.