"I bet dinosaurs thought they had time too", read another sign, as students and parents marched on parliament house in the capital Wellington.
Ms Bradford said she faced verbal abuse and death threats over her anti-smacking bill, which was passed in 2007, and was protected by parliamentary security during that time.
Students will start to gather at City Hall at 10:30 a.m. on Friday and talks will begin at 11 a.m. Portland Public Schools sent out a letter to parents Thursday afternoon reminding them that any students who walk out will be marked absent.
The right continue to infantilise school students who have opinions.
Other students followed in her wake, like Alexandria Villasenor.
Through social media, the group has also been able to communicate with protests across the globe.
New Zealand Prime Minister Jacinda Ardern, who has pledged NZ$100 million (S$92.5 million) to reduce greenhouse gas emissions, supports the student strikes, saying teenagers should not wait until they were old enough to vote to use their voice.
Over in Australia, the School Strike 4 Climate took place in 60 cities and towns across the country.
Her efforts eventually got the attention of world leaders when she delivered a blistering speech at the UN's climate conference in December.
"One time I managed to get in my auto and lock it in time and they just kicked the door", Ms Bennett said.
Morning rain cleared in time for the masses to come together at 12.30pm, all with the same objective - to support an worldwide movement for governments to make changes towards preserving the planet.
"I think all of us will probably be united in wanting to ensure we have the kind of political environment where everyone can hold their views, but they can do that safely", Ardern added. "It's not something that can be taken lightly".