Those against gay rights speak of "defending marriage" and "protecting children" and "supporting traditional marriage".
Those against youth rights speak of "for their own good" and "parental rights" and "protecting children".
Those against prenatal rights speak of "women's reproductive rights" and "no forced parenthood" and "every child a wanted child" and "deciding whether and when to reproduce" and "Get your laws off my body!" and "Against abortion? Don't have one!".
Those in favor of slavery spoke of "property rights" and "privacy" and "constitutional protections" and "legislating morality".
Those in favor of rape speak of "men's sexual rights" and "no forced celibacy" and "opposing rape is telling those conceived of rape they should not exist" and "the right to one's own penis" and "Get your laws off my body!" and "Do not force your morality upon others!" and "If you are against rape, you are free not to rape anyone.".
Okay, I made that last one up but you get the point. I believe that the personhood movement will ultimately succeed because it forces people to look at the essential issue: Do all human beings deserve human rights?