This is that discussion. Let's hear your thoughts.

Mine is that the pranksters want to expose the fear-mindset in general for what it is, and relatedly show that the freedoms we've given up in the name of security was a bad idea, and finally that security is an illusion because you can't secure all places at all times unless you want to live in something that resembles a prison.

Bingo. The white flags denote surrender: surrendering your rights to the state. I got that too!

In short, they say: "America: you're pwned, like this bridge, and, like the cops here, you don't even know how it happened".

There was no statement, so we can all speculate, but that's it.