My view of being pro-life is that of the Church:
When it speaks on the 5th commandment-- which talks about what we shouldn’t do– and also when it speaks on solidarity with the poor, work for economic and Social Justice-- which is about what we should do-- the Church is teaching us that every aspect of Church teaching is about being “pro-life”.
After all-- Jesus’s central message is pro-life: I came so that you might have life and have it more abundantly. Jesus was not just speaking about physical life. While all of the injustices of this world must be fought, it is twice over as important to help people find Salvation. The life of the soul is infiinitely more precious than the life of the body.
To be fully pro-life is to strive to enact the Gospel values in your own life, to fight for justice, to fight against injustice, to work for laws protecting the weak at both ends of the spectrum, and to always proclaim the Truth and help others find Salvation.
How we do that will depend upon our circumstances in life.