Christians and hate

[YYZ Skinhead]

Jesus said "love thy neighbor" and "love thine enemies", and either He or Paul said that people claiming Belief cannot hate their brother. Does "brother" refer specifically to other Believers or to other humans in general?

Is a Christian forbidden to hate anyone, however evil that person/group may be?

Are Christians forbidden to promote and/or peddle hate propaganda and symbols? Fred "God Hates Everybody" Phelps of Westboro Baptist Church does this (though I dunno if he sells anything), and the Christian-Identity Ku Klux Klan of course claim Christianity and they most definitely profit off selling hate. Is a Christian who sells World War II memorabilia and Nazi paraphernalia sinning? There are many professing Christians who sell this kind of thing, so I wanted to get the facts.