So, the post women's march meetings are being called 'huddles' and I went to one last night.
(Side note: I'm Australian, but we're facing some of the same issues that the US is, and have been getting into the activist movement in parallel with the US liberals.)
I'm not sure if other people have been to the follow up huddles in their area, or how they feel about on-the-ground organisation, but I found it really helpful and reassuring to meet others who were willing to talk about the same feelings of frustration and anger, as well as how to work towards fixing things. I encourage people to connect with people in their local area if that's within your capability.
Brief: the Sydney Women's March was initially organised by American expats, and they were expecting maybe 800 people to walk. They got an estimated 8-9K. Australians are Not Happy, Jan.
( good follow-up )Anyway, if you have any huddles in your area, I would strongly encourage you to join them, if only to know that you're not alone, and to access the resources of others, while being a resource to others yourself.
Worth noting: there will probably be more women's marches for International Women's Day - at least, there will be in Sydney. Check out your town/city for details of what's happening in your area, if anything.
And know that the US certainly isn't alone in this; other Western democracies are mobilising too, and while your media won't show it (and sometimes ours won't either), it is happening.