Believe me, I do get where you're coming from in all of this. But "fighting for zoo rights" is problematic in my opinion. For most people mentioning that "I like to have sex with", being equal to "animals" is enough to trigger most non-zoos fight or flight instincts. Any amount of rational thought and logic is instantly terminated as soon as those words slip out of your mouth, or anything that alludes to it. We can try to prove to the outside world that not all sex with animals is necessarily rape and that if it's done properly the animal can enjoy it. That zoo love is indeed a valid form of love.
One can preach this sunrise until sunset. It doesn't stop that fact that most non-zoo people liken zoophilia and bestiality to a mental illness and that our love is actually "rape" no matter how much evidence says otherwise. We're fighting an uphill battle of ignorance and bias. There is a reason that the older members of the zoo community are strictly against people advocating for zoo rights on their behalf. They've lived through the history. The more we try to preach our love to the outside world, the more they become aware that we exist in the first place, and in turn harsher and stricter laws are passed against us. They've seen this time and time again.
The only thing I believe we can hope for is the decriminalization of bestiality within say, maybe 100 years, but probably more. The western world is slowly but surely loosing it's deep rooted Judeo-Christian values as time progresses. More and more universities are starting to do research into the morality, the logic, and the motives behind the people that practice bestiality. In time, zoos might become more understood on an academic level. As more and more publications explaining the psychology, the motives, and the morality of zoophilia and bestiality is published, the more we might gain a little bit of tolerance. Not acceptance, but a shed of tolerance from those that are not like us.
But this isn't something that's going to happen overnight. This isn't something that is going to be assisted by going onto Twitter and preaching for the acceptance of zoos. All this accomplishes is creating a "zoo positivity" echo chamber. The only thing that will help us is scientific and psychological studies. Even with this, there will always be the naysayers pushing us back down to square one. There's a good possibility that the naysayers will always outnumber those that are zoos or people educated enough to understand it and tolerate it. Most of the masses are uneducated, and most of the masses are ignorant. It's a sad fact of life.