Swedish environmental activist Greta Thunberg, the initiator of the "School Strike for Climate" movement, has vowed to continue her protests after graduating from high school.

Thunberg staged her "last school striking" on Friday, the day of her graduation, with other participants.

She was wearing a cap commonly worn by graduating students. The participants chanted their slogan demanding "climate justice now."

Thunberg said she and other activists will continue their protest every Friday because it is only the beginning of the fight. She said the climate crisis is getting worse and it is their duty to speak up.

The young activist also commented on Twitter on the destruction of a dam in southern Ukraine. She described it as "ecocide" and "another atrocity which leaves the world lost for words." She also told media that the dam's bursting was horrifying, and that Russia needs to be held accountable for their actions and crimes.