At issue is the credibility of the OP.
His claim of 2 million participants: Nowhere is that number substantiated by any credible witness or estimator. Whether it was 1,000 or 800,000, it was not the 2,000,000 that he claims. Even infowars, the site that he used for the claim, links to many facebook pages and tweets from people on the scene who talk about "thousands".
As for it being a statement against the U.S. government, there are always going to be tagalong fringe groups who attempt to hijack anything to try to inflate the amount of support to promote their claims. Recruiting posters for the ride all over the country and certainly the talk among the bikers in this area were simply that the ride was a show of remembrance and support for the victims and families of victims of 9/11/2001. The OP is attempting to claim that all riders were there for a political motive that was nonexistent for the vast majority of riders.
He claimed that the mainstream media didn't cover it. As I pointed out, they did. He may not agree with WHAT they reported, but they DID report it.
The ride and assembly was remarkable. The OP is trying to hijack it to drum up support for his narrow view of the world by making wild claims from thousands of miles away, depending on one website to feed him propaganda to support that view.
He also has a wild idea that freedom of speech applies to a privately owned forum. It does not. WGT generally gives us a lot of leeway on these forums but promotion of specific political viewpoints as the OP is doing does not belong here.