The concentration camps and Nazis were not stopped by showing photographs of their horrors to 4 and 5 year olds. They were stopped by showing them to adults, to people who were actually involved in choices that affected these atrocities. In everything I have read, they managed to reach those adults and to stop the atrocities without the indiscriminate plastering of those photos on the sides of trucks and on street corners.
I will reiterate what I have said in other threads. If you or anyone feels that your 4, 5 or 6 year old will benefit from seeing huge bloody graphic photographs of dismembered babies or that they require such to understand that hurting others is wrong, by all means show them to those children. It is your choice. Let others, however, also exercise their best judgement and choice in what and when they choose to show such things to their children.
This argument is in no way pro-abortion vs. pro-life. I have yet to see a single poster say “you shouldn’t show these photos to anyone because abortion is a great and wonderful thing and should not be hindered”. Everyone who is objecting to them that I have seen is saying “use them, but do so with discretion and reasonable judgement”.
If four and five year olds were out seeking abortions, then I would say, by all means, require them to look at the pictures so that they understand what they are planning to do and understand the actual consequences. However, they are not. There are a million other ways to teach someone of that age to value life and not to hurt others.
If the only ages at which such photos made an impression were 4, 5 or 6 years old and had no effect if shown at 9, 10 or 11 or later, I would say there may be some justification for using them with 4, 5 and 6 year olds, but they are not.
Use the images, but use them in ways that can reasonably be expected to reach the intended audience rather than preschoolers and spare the born children just as you would the unborn.