Yolanda Renee King, granddaughter of Martin Luther King, told the crowd at the March for Our Lives rally in Washington DC: “I have a dream that enough is enough. And that this should be a gun-free world, period.”

She then asked the crowd to repeat back her words: “Spread the word, have you heard? All across the nation. We are going to be a great generation.”

She led the chant three times, encouraging the crowd to repeat her words “so the whole world can hear”.