WATCH: Foreign reporter struggles to understand America's gun violence at emotional Thousand Oaks press briefing

At a Thursday press conference addressing last night's mass shooting in Thousand Oaks, California, a foreign reporter asked Ventura County sheriff Geoff Dean why the United States is the only country where mass shootings happen on a regular basis.

"Sheriff, why do you think this keeps happening in the United States of America and not in comparable rich democracies," asked the reporter.

"That's a pretty challenging question. I think we see unfortunate, horrific actions that happen all over the world," replied Dean. "I don't know if it happens more in the United States or doesn't. I would have to read the stats."

"It does," shot back the reporter. "Why do you think that is?"

"I don't know," said the sheriff, clearly frustrated. "If I knew the answer to that, I would do something to stop it."

There have been 307 mass shootings in the United States in 2018.

Watch the video below.