(By DCist's Sommer Mathis, one of the few official bloggers who is attending the DNC as official member of the state blogger corps. Be sure to sign up for her Twitter updates at the DNC here.)

At least one protester was detained by police outside the Colorado Convention Center in downtown Denver just after noon on Monday, as the Democratic National Convention was getting underway. Four people wearing bandanas over their faces, who said they were protesting "capitalism," sat down on the sidewalk in front of the convention center, prompting a swarm of roughly 20 police officers to shut down one lane of traffic and subsequently put one of them in plastic handcuffs. Two of the other protesters told bystanders that they had not been told by police why their friend was being arrested, and claimed they had done nothing wrong.