Of course, it is not feasible for most of us to travel to D.C. for this sort of thing even if we really wanted to. The good news is that there a number of sister marches taking place in many states and even in several countries outside the U.S. You might be surprised to discover that there is one near you. So if you are looking for something to do tomorrow and you support the mission and principles of the march, you can see where the closest sister march is here.
And yes, I have heard from a few men who are upset about the name of the march because they feel excluded by it. I know it probably won't help those who feel this way, but I will point you to the FAQ page of the march where one of the questions is "I'm not a woman, am I invited?" Here's the answer:
Yes, the Women’s March on Washington (WMW) is for any person, regardless of gender or gender identity, who believes women’s rights are human rights.I think that seems inclusive, despite the name. I certainly believe that women's rights are human rights.