I see the light. I see that lovely red beacon

You might want to be careful

So people are following another flag touting freedom for all. Where have I heard that before?

The Red in the US Flag - Blood shed to promote freedom for others.
The Red in the China, USSR, and Nazi Flag - Blood of others shed to promote power of the state.

Syndicalist red flag: The strength and blood of the workers

pretty sure it's red because of the bloodshed

It's red because it represents the blood, passion, and strength of workers

I knew about the blood, I just thought it was the blood spilled by the women and children of the bourgeoisie. And the proletariat for that matter.