There are a million arguments that prove why you can't be Christian and pro-abortion, but I don't need to make any of them. I need only mention this one fact: Our Lord entered the world as a "fetus." He sanctified unborn life by becoming it Himself. That's all. End of discussion.
Since the inception of Twitter, there have been approximately 1 trillion tweets made. Collectively, they have not changed a single person's mind on any topic.
If you want to restrict something to reduce school shootings, reduce the number of times the cops are warned about someone before they get up off their asses and fucking check up on it.