It's a good idea, but are the people that will be marching actually moderate? If you're moderate/independent like me, you wouldn't be so strongly opinionated about the government to be part of a march.
I have seen enough extreme liberals and extreme republicans for a lifetime though. My opinions cross over both sides. For example: yes to gay rights, no to legalization of marijuana, etc, etc.
I like the idea being socialism, but I think that capitalism is a more progressive system of economics - so I agree somewhat with republic-leaning economic policies, but also like the idea of a balanced, stable economy.
You could call me a moderate, near-independent liberal.
Please feed the trolls. XD