Greta Thunberg and Alexandria Villaseñor at the UN and Rise and Resist at a Mets game.

Good news is hard to find these days. The authoritarian wave sweeping the globe is not to be underestimated. However, the flourishing of youth activism, in particular around climate change, is a sign of hope. It also buoys older activists, who have been involved in social justice movements since their own youth. Greta Thunberg joined in Alexandria Villaseñor's regular protest at the UN and Dag Hammerskjold Plaza this week. Their largely silent vigil was an indictment of inaction by political leaders and older generations. Meanwhile, Rise and Resist took its immigration justice message to a Mets game at Citifield on Saturday night, unfurling a banner during the fifth inning. The action was brief and peaceful. Security confiscated but later returned the banner. Public reaction throughout the stadium was cheerful and approving. Veteran activists will continue to organize and protest, and the new generation is developing its own tools of non-violent resistance and leadership. We all have a great deal to learn from each other. #RiseAndResist #GretaThunberg #AlexandriaVillseñor .