The ability of the Parkland, Fla., school-shooting victims to organize nationwide gun control rallies less than six weeks after their school was attacked is nothing short of a political miracle. Even Byron Allen couldn’t have predicted the perfect storm of demographics, inept politicians, charismatic kids and engaged…

To the black students who walked out of schools across the country yesterday: We see you. We watched as you stood there, brown skin shining, braids swinging, voices booming, taking charge and walking in the revolutionary tradition of your ancestors. We saw the fire in your eyes. We felt it burning. Hold on to it.…