North Korea executes its own citizens and anyone that speaks out against the Kim regime. It also has nukes and even occasionally even fires missiles over our allys. I can name a few other countries that have harshly responded against protestors in recent years. Why aren’t we attacking them? Trump vowed that the U.S will no longer be the world police. Using your rational , this is the U.S being the police. Disclaimer - I voted for Trump believing what he said about staying out of conflicts like these. I’ve come to the realization that I made a mistake.