Yes, it is wrong to hate anyone.
As the Pope said a few months ago when asked what he thought of homosexuality "Who am I to judge".
The same words once used by Jesus. And "He who is without sin cast the first stone."
etc.
To be a Christian it is necessary to love everyone and to show no fear of loving.
A survivor of the Nazi Holocaust, Eva Mozes Kor, has recently forgiven the camp commandant of the concentration camp where she was held - she has even adopted his grandson too.
http://www.dailymail.co.uk/femail/article-2909546/The-Holocaust-twin-tortured-Mengele-escape-Auschwitz-ADOPTED-grandson-Nazi-commandant-Rudolf-Hoess.html
I should warn you that in respect of the Holocaust, it is for the Jews (Children of Israel) to decide. We are commanded by God to forgive those who trespass against us. I am not a Jews therefore I am not allowed to forgive the Nazis. But I can be a Christian and Love the people of the world and pray for them.
The Lord's Pray as you may never have heard it before, in old English.
https://www.youtube.com/watch?v=7Wl-OZ3breE