I know hate is a strong word, but there are some things in this world that we all could do without.
For me dissension or dissention is one of the big ones I'd rather not see in the world.
Dissention is defined as: disagreement; especially : partisan and contentious quarreling. It's synonyms are: conflict, dis-accord, discordance, discordancy, disharmony, discord, dissent, dissidence, dissonance, disunion, disunity, division, friction, infighting, inharmony, schism, strife, variance, war, warfare.
Something that propagates or leads to war and all that comes in it's wake, just needs to stop.