Earlier today, there was an apparent bombing near the finish line of the Boston Marathon that, according to preliminary reports, has left two people dead and dozens more injured.

In response, and utterly without any evidence, frequent Fox News contributor Erik Rush tweeted out a message blaming the bombing on Muslim terrorists, saying “Everybody do the National Security Ankle Grab! Let’s bring more Saudis in without screening them! C’mon! #bostonmarathon.”

That prompted another Twitter user to chastize Rush for making such unsupported accusations, which prompted Rush to respond with a call for all Muslims to be killed: