I can tell you one thing all the marches accomplished, and it was the main reason I marched here in North Carolina:
A friend who left Pakistan because she didn't feel safe as a lesbian Muslim, a friend who is a refugee from DRC, and my 9 year old Latino neighbor, who has been told by an (alleged) adult that Trump's people will take her parents away and put her in a juvenile home because anchor babies are born criminals, all have tangible proof that there are a whole bunch of people who care what happens to them. That's worth a lot.