The phrase "young protesters" refers to young people who are actively participating in demonstrations or rallies to express their opinions or concerns about a specific issue. Full definition
It also drew 10 young protesters who shouted obscenities and brandished signs saying «Yuppies Out of Wicker Park. (articles.chicagotribune.com)
So four days after the shooting, she tweeted an offer to host young protesters coming to Washington for the newly announced March For Our Lives rally in support of stronger gun control measures. (sun-sentinel.com)
«Have some of the young protesters - the «99ers» as they're becoming known - from this rapidly growing movement over for a big holiday dinner!» (religion.blogs.cnn.com)