Your question is not specific but I will give you some insight on World War II that may help you answer this question:
There 2 events that are most mentioned which triggered World War II. The first would be the Marco Polo Bridge Incident between China and Japan on July 7, 1937.
Another historical even that has been mentioned to have started WWII was invasion of Germany in Poland in September 1, 1939. Because of this France and Britain declared war on the Nazi's.
The Civil Rights Movement through civil disobedience.
I may not be correct but I believe that Martin Luther King implied that if they were to protest with violent it would only result in more violence as a retaliation by the government. So by doing peaceful protest the government didnt have an actual solid reason to attack them, so when the government did enact violence on them it caught the attention of people around the world.
Answer:
the number three korean line represents the war
Explanation: