The resources minister, Matt Canavan, last week told students that the only thing they’d learn by skipping school to protest over inaction on climate change would be how to join the dole queue.

The history of protest in Australia shows the opposite. The protest leaders of the 1960s and 1970s, including many high school students, were denounced by conservatives as long-haired layabouts who would never amount to anything. In fact, they became the next generation of leaders in politics, universities, media, the public service, NGOs and even business.

Take the 1965 Freedom Ride, for instance. “Look at em,” said one RSL stalwart when students turned up to protest against the ban on black diggers. “The brains of Australia! God help you if you ever end up under em.” That’s exactly what happened. The Freedom Ride’s leaders included Jim Spigelman, who would go on to become Chief Justice of NSW and chair of the ABC, Ann Curthoys, later an eminent professor, and Charles Perkins, who became an Aboriginal leader, leading public servant and one of Australia’s Living National Treasures.

Student protesters have become newspaper editors, cabinet ministers, prize-winning poets, much-loved cartoonists, publishers, world-famous authors and Supreme Court judges.