One of the founders of the movement, David Bereit, will be there and the forces of those who are for abortion are also planning to be there in force.
The organisers have asked, as always, that attendance is peaceful and prayerful.
Those pro abortionists have a Facebook entry that clearly shows their hatred. It also shows that they are planning to collect cash from the passing public to support the abortion clinics. This is, of course, illegal without a special licence.
The main activist appears to be a Hannah Austin, a feminist and activist on behalf of women's rights (but not as far as their physical and mental well being apparently) and I suggest that Rosaries are offered up on this woman's behalf.
Hannah and her friends have produced a banner stating 'Get your Rosaries off our ovaries'- that tells you the level of their debating abilities.
Register beforehand if you are able, on the 40 Days for Life Cardiff website.
Our Lady of Wales, pray for us and those who oppose the right to life, especially life in the mother's womb.