They can give speeches and send fundraising emails. Or they can act: declare this court illegitimate. Demand its expansion. Abolish the filibuster. Treat this like the emergency it is, and make America a representative democracy.

I can’t say it any better than Jill Filipovic has. Please read

https://www.theguardian.com/commentisfree/2022/jun/25/us-supreme-court-illegitimate-institution?CMP=Share_iOSApp_Other