Srila Prabhupada:

They enquire why I have come to the West. If I enquire that two thousand years ago you have taught that “Thou shall not kill,” and your business is only to kill; I have come to enquire from you, “What is your answer? How you have become civilized, that you cannot accept one instruction of Jesus Christ. And you are declaring yourself as Christian and civilized.” This is my question. Answer it. In two thousand years, first of all you began killing Christ. Never mind; still, two thousand years passed, you could not stop killing? You could not accept the first instruction. What kind of civilized man?

May 10, 1975, Perth