You don't have to wait to change the world. It appears graduating high school senior Paxton Smith knows that well: The class valedictorian didn't waste time or mince words when giving her commencement speech in Texas on Sunday. Instead of delivering a pre-approved speech on teen media use, D Magazine reported, she used her platform to decry a bill Texas Gov. Greg Abbott recently signed that bans abortion in the state at six weeks, a time when most people don't know they're pregnant. While her voice shakes at first in the video above, Smith gains confidence as she goes on....