The Latin Vis Pacem Para Bellum is perhaps the best answer to Pacifism. The catch phrase of pacifism used to be What if the gave a war and no one came?
Implied within that phrase is that all humans a reasoable and seeking peace. A study of history shows that there have always been humans who are viscious and seeking absolute dominance over others. Pacifism is an attempt to claim moral superiority by rejecting violence in a world where violence is almost omnipresent. A good example of Pacifism confronting evil is found in the 1940's with the Jewish population of Germany who mounted no violent resistance to the Nazi regime. They were exterminated men, women and children. The Einsatzgrupen did not respect their refusla to mount violent resistance. They were hearded aboard the train and marched to the showers.
Pacifism is a self delusion that by moral condemnation without action to back it up will change reality.
Stay well - Stay safe - Stay armed - Yorktown
They also seek moral superiority via the fallacy of attempting to establish the moral equivalency of any act of violence, whereby resistance to tyranny and atrocity occupies the same moral sphere. It's a desperate excuse required to evade the truth of their own cowardice.
Pacifism on a Chrisitan principle ("turn the other cheek to him") doesn't seek to change reality--it seeks to preserve one's soul. There's something to be said for Nietzsche's aphorism: "Whoever fights monsters should see to it that in the process he does not become a monster."
That said, I think Jesus told his disciples to sell their cloaks and buy swords for a reason.