There isn't a difference though, this is a ceremonial post.. It's just like a parade. They aren't supposed to be armed and I doubt they ever will be.
Even the guy in charge says it will never happen. Soliders aren't here to protect the public, that's the job of the police.
To be honest, it sucks to even debate this topic. I wish someone would have run over those gutless punks over and let them bleed out in the street.