Earlier quoted context omitted.
What is your proposal for moving the ball forward? How would you deal with groups of racists trying to influence society?
Base society on strong foundational principles like liberty and justice. Give everyone the tools to properly evaluate ideas. Attempts to extinguish bad ideas should focus on arguing the point. Gradually the bad ideas will die out. Every possible alternative relies on whoever is in power exercising condescending 'parent knows best' authority. And the rest of us just have to hope the whims of whoever is in power happen…
In the article we have a portion of society acting in their view of "justice".