Here I thought the most basic right was the right to life.
"It's a hell of a thing, killin' a man. You take away everything he has and everything he ever will have." ... from The Unforgiven
Note the "everything he ever will have..." part. Isn't this the greatest in the case of the unborn INDIVIDUAL ( emphasis mine ) ? Because, suppose someone approaches you from behind on the street and shoots you in the back of the head. ( I recall a news account of such ... ) What's it to you? This is the situation of the unborn.