One helpful perspective you may not have considered is represented here in a post by Rosaria Butterfield. She grew up thinking that Planned Parenthood upheld "family values." Read it and ponder the fact that some of the people you work with or live by or go to school with grew up much in the same way. And God is just as able to grab hold of them as he did Rosaria. Maybe he'll even use you!
Finally (for this post anyway), Justin Taylor has posted lots of helpful commentary on his blog. This update contains lots of helpful information, including some ways we can take action. Now that the Senate defunding vote has been taken and a 5th video has been posted, it is a bit "dated", but still helpful.