Why is ther so much hate in america

While there can't be a definite answer, there is an explanation. America is generally a diverse place, as it is the country of immigrants. This brings in a mixture of culture. 

Certain cultures may have hate for others, which can generate the hate you see. Another possibility is the idea of the silent majority. The amount of people who spread hate may be in the minority, but their voice is so loud they may appear to be the majority. =)