Anger or Fear?

If the population of a nation must have a strong emotional component to act in any politicaly meaningful way, which is more constructive?
Anger will move people to change things, sometimes drastically with violent means.
Fear will move people to be sheep, unquestioning, eyes closed to the "bad things" happening around them.
Love will move people to help one another, compassionately reaching out to their fellows in support.
Hate will move people to swing machetes at their neighbor of 20 years.

I fear that we have too little love in our society to save it and the anger that this engenders is not good for the future.