As Barack Obama continues to turn a deaf ear to Americans who oppose Universal Health Care, experts are growing concerned for his safety as hate groups intensify their rhetoric:

The Secret Service is investigating a Maryland man who held a sign reading “Death to Obama” and “Death to Michelle and her two stupid kids” outside a town hall meeting this week. And in New Hampshire, another man stood across the street from a Presidential town hall with his gun on full display.

“I don’t think these are simply people who are mentally ill or off their rocker,” Mark Potok, director of the Intelligence Project at the Southern Poverty Law Center, told ABC News of those behind the threats. “In a very real sense they represent a genuine reaction, a genuine backlash against Obama.” Source