By all means, people who have the strength, the opportunity, and the desire should attempt to educate rather than browbeat.
But I blame no minority for being unwilling to do the heavy lifting on it. They shouldn't have to eat shit and give back sweetness non-stop. Asking them to do so ignores human nature every bit as much as the idea that you can call someone racist so much they stop being racist.
The reality is, a lot of people have given up on the racists, in part because they've tried before, often in their own families. As has been pointed out, the study was about trans people, and many people have no direct contact with trans people. They also weren't necessarily taught shitty things about trans people, largely because a couple of decades ago most people had never heard the concept as anything but TV fantasy.
That's a very different kettle of fish than American racism, which has been with us since our inception and sunk into every pore, where literally generations of families have worn the hood, or saluted the swastika, or just routinely thought of non-whites as sub human.
So educate, if you have it in you. But educating people and holding a firm societal line against racism -- including calling it what it is -- aren't mutually exclusive. And you can't reasonably expect anyone to always be educating, unless you have the Maitreya in your pocket. I've had these discussions with my extended racist relatives, and after enough attempts, where they flatly tell you they don't care what effect it has, and that they don't believe anything you're saying because Rush told them differently, it stops being worth your limited time in this world to try and correct people who cleave to hatred.