Apparently, you are blind and didn't watch the video or read the article. She was charged, but charges were dropped when the DA saw the video, just like the rest of us have now seen the video. Maybe she's not even human but rather a pit bull. Animals don't get to have trials like humans have before they are euthanized. You're right. How do we know she's not a yeti? Or a Martian. You don't know. She might be a Vulcan from Vulcan (or wherever Vulcans come from). You don't know. But what we do know is that cops can do know wrong, just as long as there is at least one Republican left on the planet.