Number of "likes" does not represent truth, nor quality of opinion, nor rationality, nor expertise. In fact, popularity can just as easily equate with lower quality of product, a lower degree of accuracy and truth, a paucity of proper consideration.
Talking is good, but solutions for complex problems will not be found in kangaroo courts online. What stands between us and injustice are, less sensationally, institutions: The courts. The police. The rule of law. Schools and universities. Investigative journalism. Education, expertise, considered judgment.