Liberal TV show host? Want to guarantee that the post-Stack finger will be pointed at conservatives?  Choose as your sole guest on the subject someone from the left-wing Southern Poverty Law Center. That's precisely what Chris Matthews did this evening, with utterly predictable results.

Right on script, SPLC director Mark Potok twice associated Austin plane-bomber Andrew Stack with "the radical right."

How consciously did Matthews stack the deck?  He described the SPLC as a group "which monitors extremists"—as if the SPLC looks for wackos on the left as well as the right.