That can be done by neutralising the likes and hatred.
Seeing oneness or accepting the total as it is!.
When negative people try to create negativity, the best way is not to allow it inside! by accepting the total, it can be done easily!
Every one is part of the "Total". By thinking about a part which hurts, one is unable to accept oneself.
Let a person do what should be done at that particular situation.
Self acceptance is happiness!