Donuel said, "I actually said shared hate unites people". To clarify what I said earlier, that "hate divides people":

Hate can unite the group of people who have a common target, but if there are a number of groups of people who hate different targets then the whole population is divided into smaller groups. It's difficult to unite the whole population in that case to work together as a community.

If the main motivator is love then there is more chance of community spirit.