The association "march for our lives" denouces the legalisation of guns in United-States and the death that it generates, about 0,1% of the american population. In their own words : We demand bold action to end the Gun Violence Epidemic . Their most famous mottos are "NEVER AGAIN", "STOP GUN VIOLENCE" or "PROTECT KIDS NOT GUNS" Their mission "To harness the power of young people across the country to fight for sensible gun violence prevention policies that save lives." The Children of Your Country Are Calling You to Action Two of these young women gave up tickets to see Hamilton in order to march. If you don't understand the gravity of that sacrifice, if you can't see how this proves their commitment, then you don't understand the power of Lin-Manuel Miranda.