Hatred is one of the main feelings opposite to love. Historically, humans have had waves of hatred. As humans become more civilized and more educated the hatred diminishes. The New Age culture understands the negative vibration of hatred and rejects it by choice. In New Age culture, people still reject many things but without feeling much hatred. They reject things by choice and let them go with love.
Hatred is often associated with the idea of friends and enemies. Humans are divided into families, groups, layers, races, casts, professions, regions and countries. Historically, it was very prominent to love your own group - country and to hate everything foreign. Much of this culture is still present. People very often will reject everything foreign. This is often associated with propaganda by religions and governments. Many civil wars were organized in history for very artificial reasons and artificial differences.
Modern civilization unites people via television, travel and the internet. Humans of different countries now can see and comprehend the negative consequences of wars. This unites people in new ways.
There is still much propaganda, confusion and hatred. Much education is needed to make humans less hostile to foreigners.
The high level of Xenophobia in humans is a key factor that you need to consider when dealing with humans. You will be judged first not by your actions and intentions but by your look. This is why we recommend using human mediators when dealing with humans. If you look different or behave as a foreigner, many humans would be afraid of you and suspicious of your motives.
The only exception may be for the aliens who look like human gods - as more powerful, more humanly beautiful and especially as wise white-bearded human elders. In any case, there may be enough fear to test your invincibility with weapons, so appearing physically without the proper protection may be fatal.