"Save" the Black Hills?! By trashing them?! Whoever thinks their appalling gathering doesn't harm the land has taken way too many drugs.
Since the 1960s hippies and activists have been different crowds. There's always been a bit of overlap, but basically the Rainbows are in the "drop out, tune in, turn on" camp - they don't blockade or do anything but think their drumming circles and drug trips will magically heal the earth. They don't do activism; that's a lie.
There have been a lot of comparisons to Sturgis. No one wants the bike gathering there, either. BUT, at least Sturgis takes place on paved areas, not in ecologically-sensitive, ceremonial areas. AND Sturgis bikers often arrive two to a bike, whereas Rainbows often show up as one or two persons per van. Per person, the Rainbows are consuming more fossil fuels and causing more destruction. If the hippies want to help, let them go blockade the bike rally, or set up next to the invasive Man Camps and blockade the pipelines.
What? Not fun enough? Too hard? Too risky?
No, they'd rather be racist colonizers, violating the boundaries of the tribes and spreading lies.