If you're a man I hope you never masturbate or have sex with protection or else you're killing millions of potential human beings. If you're a woman, well, better get pregnant as often as you can or else you're wasting your eggs.
The DNA of a new human individual isn't created until fertilization. An unfertilized egg isn't a human anymore than an unfertilized chicken egg is a chicken. It only has a portion the DNA of the potential individual that could result after fertilization and development.
This is basic science. When human life becomes worthy of protection & rights is a matter of philosophy, not science, but I doubt you seriously believe an unfertilized egg or sperm needs human rights and protections.
That would be a very rare belief, even pro-life absolutists argue that life begins at conception/fertilization.
On the topic, it is nice that the VP addressed the March although they should take care not to become too identified with the Republican Party. There are plenty of people marching today who support rights that the current GOP is not identified with.
I can see this conflation is happening a lot in this thread with people identifying only a certain brand of conservative evangelical with pro-life beliefs; this march was actually a historically Catholic event although it is trying to become more ecumenical. Catholics also advocate for and help with refugees, health care, adoption, and other things that people here are claiming they don't support.
See for instance
http://www.usccb.org/about/pro-life-activities/pastoral-plan-prolife-activities.cfm which calls for "support for legislation that provides morally acceptable alternatives to abortion, including funding to expand education, health, nutrition, and other services for disadvantaged parents and their children" alongside the standard pro life goals. They also put a lot of work in running stuff like Catholic Charities, nonprofit hospitals, and other services themselves.