Not to discount the importance of marches, but IMO, calling & emailing our Members of Congress (MOCs) on a regular basis would have more impact. The media can & does ignore marches. They under/over-report crowd size depending on the specific media's agenda. Second to voting, communicating with our Elected Officials is the most important thing we can do. And thanks to digital technology, we can do it quickly, frequently, & with ease!
There should not be a week goes by where We the People don't fill up the voice mail/email boxes of Congress with messages.
Put your reps email addresses & phone numbers in your contacts list. What 3-4 issues are the closest to your heart? Write up a 10-15 second message on those views/issues. Time it. You can cover a lot in 10 seconds if you are focused. Health care, the environment, infrastructure, veteran affairs, whatever.
When a big issue comes up that Congress votes on, create a new message & leave it. But every week, leave at least one message for your Representative & two Senators about how you feel about the issues you care about..
Let them know you pay attention & talk to your family & friends. Get as many people as you know to commit to calling their MOCs every week. Once you have your 3-5 default messages, it takes less than 5 minutes a week. How long does a march take?
On special weeks it may take a few more minutes, but you'll find that you get very good at writing up quick, brief messages.
What is a representative government worth to you?