Yes, America. It could happen here. The fact that no large scale attack on a shopping mall has occurred in America is probably due more to luck than anything else.

CNN:

Gunmen ambushed an upscale shopping mall in the Kenyan capital on Saturday, leading to a fierce gunbattle with police and at least 20 people killed, the Kenyan Red Cross said.

Fifty people more people were wounded in the attack at the mall in Nairobi, said Abbas Gullet, head of the Kenyan Red Cross.

The gunmen burst into the mall and shot indiscriminately, taking some people hostage, according to a senior Kenyan government source.

It was unclear how many hostages the attackers took, but police are trying to negotiate for their release and retake the building, according to the source.

Attackers appear to be of Somali origin, a Kenyan government source and Western diplomatic sources told CNN.

The military asked local media not to televise anything live because the gunmen are watching the screens in the mall.

Crowds fled down the streets as soldiers in military fatigues crawled under cars to get closer to the mall, guns cocked.

Surveillance helicopters flew overhead.

"We urge Kenyans to keep off Westgate mall, adjacent roads and its environs until further notice," the Interior Ministry said on its Twitter page.

It declined to release further information, saying it will issue a statement later.

"We're doing our job to ensure that everyone is evacuated to safety," the ministry said. "This is a scene of crime, let police do their job."

The mall is popular with the wealthy and with foreigners who live in Nairobi. With 80 stores, as well as hostages to deal with, it may be several days before the mall is cleared.

I haven't been to a mall in years but can imagine what an attack on "Black Friday" might be like. Or on a weekend leading up to Christmas. There is no place safe from these brutes if they decide to carry out a mass casualty attack.