I'll give you a real answer instead of all of these other dork ass answers.

First, there aren't enough of us to do so.

Second, you really haven't thought through the repercussions of open carrying. Which relates to the first reason.

Open carrying puts a huge target on you. You need lots and lots of people to remain "safe". And you won't be safe. What are you going to do, shoot an ice agent if they try to arrest you? If that's your goal, why open carry? Do you think that the government here is going to suddenly follow constitutional law around a citizens right to bear arms? As they're literally illegally arresting people?

Sooner or later the amount of guns in this country is going to catch up to the ruling class but it's not going to be at a protest.