No it isn't I agree. All threats like that need to be investigated.
Another hatemonger who still has a radio show and was never held accountable by the "rightwing" media for his words during the 2002 Fla. campaign - the "Rev." Victor Curry - radio host and pres. of the Miami NAACP:
Curry charged during his radio show last week that the Bush family and the bin Laden family are partners who want to profit from war. He said they were on a "right-wing mission against the American people" and that the President Bush's administration was a "godless, wicked regime."
Naples Daily News, Oct. 17, 2002.