Sorry, I don't understand how she risked her own happiness for the sake of others. She picked a wrong battle. Google didn't do anything wrong here. An internal review process is something that happens everywhere. It's not always consistent, but it's still important and valuable.
The sad part is that social media, like always, focus on her race rather than the details. Here's an example tweet from Jeremy Howard, a known researcher (114K followers) from fast.ai:
"Whatever else you think of Google, you gotta admit their crisis PR response is staggeringly incompetent.
The day they were found to have illegally spied on and terminated activists - they picked that day to fire their top AI ethics expert (a black woman)."
He completely ignores the most important thing - why she got fired. He calls Google PR incompetent because they fired a famous black woman researcher after what happened. You see, people expect that Google would check their employees' skin color and gender before they decide to fire them. The content is not important.