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DENVER -- The State Capitol building is also often a place of constructive debate. But vandals there learned last night, police have the last word.

An anti-government protest that started there, ended with a group vandalizing the historic building.

And all under the watchful eye of law enforcement.

The Colorado State Patrol is responsible for the security at the Capitol.

There are officers there day in and day out--along with security cameras throughout the building and outside it.

But it still wasn't enough to keep a group of about 10 protestors from defacing the state's most recognizable building.

"It's one of my favorite sites to watch the majestic dome," says Olivia Myers, 26, who lives in Capitol Hill.

For her, like many other visitors, the State Capitol building is like a home away from home.

"Seeing it defaced is like seeing eggs thrown at your house window. It’s upsetting," she says.

So when she saw how protestors had tagged this "place of the people" with graffiti, she had just one thought.

"What idiot did this?" she asked.

She later learned it was a group connected to the Million Mask March through downtown Wednesday night.

"I immediately thought, March of Morons," says Myers.

Police arrested the following 10 people, most for destruction of property:

Sean Osborne, Aaron Twinam, Cody Adamec, Mason Martinez, Alexis Nieves, Casey Adkins, Titus Coit, Jeffry Newland, Lance Fortney and Joshua Tyler. See their mugshots below.

"Instead of standing up for what's right, we go around acting like hooligans. I was embarrassed. I spent a lot of the day going," (as Myers puts her hand on her face).

But cleaning crews spent the day brushing, power washing and erasing any evidence of the ugly images.

Questions still remain though, of how the damage could happen with police in and outside the building.

The State Patrol has officers stationed there 24-7.

"I don't think it matters if there is more security or not. If they're going to do it, they're going to do it," says Justice Tyler, who visited the State Capitol building from Aurora.

"They take it as a challenge to get through security--like the guy who walked into the White House in Washington D.C. and got through federal security," says his grandfather, Cliff Pence.

Visitors and Myers don't have a problem with the police response--in fact they say they appreciate it.

"You can't be on top of everything anywhere and if we lived in a country where police come down on you the moment something goes wrong, I'd be nervous," says Myers.

The State Patrol says they can't monitor every inch of this property, which they emphasize is open to everyone.

And they're not sure if they'll change any of their procedures to prevent this from happening again. They say had it been a public safety issue, they would have made changes immediately.

Graffiti damages the State Capitol in Denver. Photo: Denver Police Department

Graffiti damages the State Capitol in Denver. Photo: Denver Police Department

Graffiti damages the State Capitol in Denver. Photo: Denver Police Department

Cody Adamec (Photo: Denver Police)

Casey Adkins (Photo: Denver Police)

Titus Coit (Photo: Denver Police)

Lance Fortney (Photo: Denver Police)

Mason Martinez (Photo: Denver Police)

Jeffrey Newland (Photo: Denver Police)

Alexis Nieves (Photo: Denver Police)

Sean Osborne (Photo: Denver Police)

Aaron Twinan (Photo: Denver Police)

Joshua Tyler (Photo: Denver Police)