"None" is always grammatically singular in English textbooks, but actual usage is variable, with many people feeling that it represents a group and therefore needs a plural agreement. In formal writing, I insist on students making agreement with the singular; in other contexts, either is fine.
I believe you are not guilty of saying so. Just responsible of what you think. Are we helping amongst us to live a peaceful and better life or are we proyecting our belief in evil towards the others, contributing to war? What you think about your brother is what you think about yourself. If one loves oneself can love others.