From their web page, their true colors shine brightly:

This Earth Day, April 22, Earth Day Network and the March for Science are co-organizing a rally and teach-in on the National Mall in Washington, D.C. The day’s program will include speeches and trainings with scientists and civic organizers, musical performances, and a march through the streets of Washington, D.C. The crowd will gather at 8:00am, and the teach-in will begin at 09:00am.

So far it looks like Woodstock, I’m sure there will,be plenty of entertainingly silly memes and moments. Readers are invited to share what they find elsewhere.