Social justice warriors: profiles in weakness or powerful change agents?

There has been an interesting paradox that has arisen in the past decade regarding those agents of social justice. The meme goes that they are weak and frail, incapable of much, and they can't handle it if their feeling gets hurt.

Contrast that with the reality. Books are being burned, history is systemically subject to malpractice, journalists willingly report lies, people are losing their jobs, whole institutions are being razed, monuments torn down, and children's futures are being destroyed.

In the end, only one can be true: Either a social justice warrior is a profile of powerful systemic change or a social justice warrior is weak and nothing will ever come of this.

As for me, I've read Sun Tzu's Art of War. I don't see any wisdom in underestimating the enemy.