I'm not enough of a utilitarian to justify taking someone else's life, which is what this question amounts to. If, for instance, I were to rephrase the question with the caveat that if your answer to this question is at least one life, then it is your life that will be taken first, people in this thread would be a lot less gung ho. Yet you are all willing to sacrifice other people's lives.
Yes, no one here would give up their own life, along with millions of others, for the saving of millions from slavery for hundreds of years.