Your phrasing as "I believe in the civil rights for all people, outside the womb, and inside" carries the implicit assumption that pro-abortion people do not, in fact, believe in the civil rights for all people. The reality is that the down-voters likely do believe in the civil rights for all people, but do not believe that a fetus is a person yet. Since that is generally the debate between those who are for and against abortion, the feeling of passive-aggression from your comment stems from entirely disregarding the other side's point of view and instead simply implying that they don't care about civil liberties.
FWIW, I think just saying "I am pro-life" wouldn't have gotten you down-voted to oblivion.
The mission of FIRE is to defend and sustain individual rights at America's colleges and universities. These rights include freedom of speech, legal equality, due process, religious liberty, and sanctity of conscience — the essential qualities of individual liberty and dignity. FIRE's core mission is to protect the unprotected and to educate the public and communities of concerned Americans about the threats to these rights on our campuses and about the means to preserve them.
I think it's a pretty damn good thing when it's needed, so let's cool it with the "everyone on the planet thinks" business.
I'm a strange mix of conservative and liberal views, but I find myself strongly agreeing with "whole life" groups like Democrats for Life of America.
There are lots of pro-life women out there.
http://www.pewforum.org/2017/01/11/public-opinion-on-abortio...